Poznań Studies in the Philosophy of the Sciences and the Humanities, Volume: 124
Brill
2026
Hardback / E-Book
x, 176
Reviewed by: Wojciech Starzyński (Institute of Philosophy and Sociology, Polish Academy of Sciences, Warsaw, Poland)
Leopold Blaustein’s Studies on Edmund Husserl’s Phenomenology: Supplemented with Letters to Kazimierz Twardowski, edited and introduced by Witold Płotka, brings together Blaustein’s principal texts on Husserl and phenomenology with his correspondence with Kazimierz Twardowski. As such, the volume serves not only as a source edition restoring important but difficult-to-access materials to contemporary readers, but also reopens the question of the relation between descriptive psychology and phenomenology as two historically intertwined but increasingly divergent transformations of the Brentanian inheritance. That problem has often receded from view under the later canonization of Husserl and the relative marginalization of both early phenomenology and the Brentanian and post-Brentanian contexts within which it developed. By placing Blaustein’s writings on phenomenology alongside his letters, Płotka makes it possible to reconstruct this context from Blaustein’s own writings. At the same time, the volume raises a further question that gives it much of its interpretive interest: how Blaustein himself is to be read today—primarily as a critic of Husserl, as a continuator and reformer of Twardowski’s descriptive-psychological legacy, or as an independent thinker whose work still resists straightforward classification.
The volume is organized with considerable clarity. After a brief preface, it opens with Płotka’s introductory study, “On Blaustein’s Life and Work” (pp. 1–17)[1], followed by two main parts. Part 1, “Studies on Husserl and Phenomenology,” contains the central text of the collection, Blaustein’s 1928 monograph Husserl’s Theory of Act, Content and Object of Presentation (pp. 21–108), together with two shorter texts: “An Attempt at a Critical Assessment of Phenomenology” (1928/29; pp. 109–12) and “Edmund Husserl and His Phenomenology” (1930; pp. 113–22). Part 2 presents twenty-two letters to Twardowski from 1927 to 1937 (pp. 125–68), with the greatest concentration dating from Blaustein’s Berlin stay in late 1927 and early 1928. The formal and stylistic variety is important. The reader moves from an extended doctoral dissertation, through shorter public and partly popularizing interventions, to private correspondence in which philosophical positions appear in statu nascendi, intertwined with research plans, institutional circumstances, and personal intellectual loyalties. The collection thus shows Blaustein in several registers at once: as a systematic scholar, as a public interpreter and critic of phenomenology, and as a young philosopher working out his position in dialogue with his teacher and a wider European milieu.
Płotka’s introductory essay performs several functions at once. It provides the indispensable biographical coordinates and presents Blaustein as a Polish philosopher of Jewish origin, aesthetician, psychologist, schoolteacher, and educationalist, educated chiefly in Lvov but shaped also by Freiburg and Berlin (p. 1). More importantly, it places him at the intersection of descriptive psychology, phenomenology, and Gestalt psychology. This prevents the reader from approaching the texts collected here as if they belonged exclusively to a narrowly Husserlian context. Blaustein instead emerges within a methodologically plural constellation in which Brentano’s legacy, Twardowski’s teaching, Husserl’s phenomenology, and the Berlin psychological milieu all play constitutive roles. This framing agrees with Płotka’s 2024 monograph, The Philosophy of Leopold Blaustein: Descriptive Psychology, Phenomenology, and Aesthetics, which explicitly resists reducing Blaustein either to a disciple of Twardowski or Husserl or to the imprecise label of an “analytic phenomenologist” (Płotka 2024, 4–6).
The decision in the present review to read the source edition alongside Płotka’s 2024 monograph is therefore deliberate. The two publications perform complementary rather than competing tasks. The monograph offers a synthetic interpretation of Blaustein across the range of his work, whereas the present volume places at the reader’s disposal the principal Husserlian texts and the correspondence through which some of those interpretive claims can be tested against the sources themselves. Reading them together is especially productive because the source edition can confirm the continuity emphasized in the monograph while also making visible local tensions, shifts of emphasis, and forms of self-identification that a systematic reconstruction necessarily has to compress. In this sense, the monograph offers the interpretation, while the edition allows it to be tested against the sources.
At this point, however, a historiographical qualification concerning the “Lvov–Warsaw School” is worth making explicit. The term is entirely natural as a retrospective category and remains useful for locating Blaustein within twentieth-century Polish philosophy. Yet it can become misleading if the later international prominence of the Warsaw logical tradition is projected backwards onto Twardowski’s Lvov milieu as a whole. Płotka’s own reconstruction supplies grounds for avoiding such a reduction. He describes Twardowski’s reform of Polish philosophy as a broad program of scientific philosophy characterized by clarity, explicit distinctions, argumentative rigor, and intersubjectively controllable justification (Płotka 2024, 10–12). Twardowski’s psychology, rooted in Brentano and conceived primarily as a philosophical enterprise, constituted one of its major currents (Płotka 2024, 12–13) and is indispensable for understanding Blaustein.
A particularly revealing contemporary corrective is provided by Roman Ingarden’s survey Main Directions of Polish Philosophy, written in January 1936. Ingarden does not begin from the later image of a unified Lvov–Warsaw School. He first speaks of Twardowski’s “Lvov school” and identifies Twardowski’s decisive achievement with the introduction of a new style of philosophical work: monographic concentration on closely delimited problems, maximal precision of analysis, terminological clarity, and scientific responsibility for every formulation and thesis (Ingarden 1974, 95–96). The characteristic domains cultivated within this program included descriptive psychology, logic, and formal ontology or object theory. Ingarden is critical of the costs of Twardowski’s methodological caution, especially its tendency to postpone more general philosophical problems, but there is no suggestion here that “scientific philosophy” is synonymous with mathematical logic.
Indeed, Ingarden describes the later emergence of the logical movement precisely as a differentiation within, and eventually in tension with, the earlier Lvov formation. Under the impact of modern mathematics and the work of Frege, Russell, Whitehead, Couturat, and others, Łukasiewicz began to develop a new research program and gathered a younger group around himself. Ingarden calls the resulting movement the “Warsaw” school and goes so far as to speak of a “deep contradiction” between the new logistic school and Twardowski’s basic standpoint (Ingarden 1974, 97–99). His evaluation is unmistakably polemical: what had been scientific caution in Twardowski allegedly became skepticism, formalism, and an excessive narrowing of philosophy among some of the logicians. This polemical judgment should not simply be adopted as a neutral description. Yet precisely because the essay was written in 1936, by a participant in the same philosophical milieu, its taxonomy is historiographically significant. It shows that the logical identity later associated so strongly with the Lvov–Warsaw School was already perceived at the time as a particular development rather than as the original or exhaustive meaning of Twardowski’s school.
Most important for the present volume is what Ingarden says when he returns to the pupils who continued to work more directly in Twardowski’s spirit. He distinguishes older representatives of descriptive and experimental psychology—Władysław Witwicki, Stefan Błachowski, Stefan Baley, and Mieczysław Kreutz—from a younger generation including Tadeusz Witwicki, Maria Lutman-Kokoszyńska, Izydora Dąmbska, Leopold Blaustein, Henryk Mehlberg, and Walter Auerbach. This younger group, he adds, was also partly under the influence of Ajdukiewicz and Ingarden himself (Ingarden 1974, 102). Blaustein is thus situated by a contemporary observer not on the periphery of a fundamentally logical school but within a younger Lvov formation whose continuity with Twardowski was expressed above all through descriptive-psychological work, while remaining open to other philosophical influences.
Ingarden’s own relationship to Blaustein makes this last qualification particularly concrete. In Das literarische Kunstwerk, while discussing Blaustein’s Przedstawienia imaginatywne, Ingarden referred to him explicitly as “a student of K. Twardowski and myself” (Ingarden 1973, 319–20). He later recalled that already in his third year Blaustein was sufficiently mature and advanced that “one could discuss with him as with a colleague,” and that from their first meetings in September 1925 until the outbreak of war they saw one another almost daily (Ingarden 1963a, 87). Ingarden subsequently described him as “the most distinguished” representative of the last generation of Twardowski’s students (Ingarden 1963a, 86). His commitment in Blaustein’s work survived the war: in 1963 he initiated discussions with Polish Scientific Publishers (PWN) about an edition of Blaustein’s writings, proposed a thirteen-item corpus of approximately 400 pages, and offered to write an introduction (Ingarden 1963b). It should not be inflated into a claim that Blaustein was simply an Ingardenian philosopher: the relation between the two thinkers included substantial disagreements, and Blaustein’s primary institutional affiliation remained with Twardowski. It does, however, confirm that the intellectual situation of interwar Lvov was more complex than a simple opposition between a Twardowskian school and an external phenomenology. Blaustein could remain one of Twardowski’s younger students while simultaneously attending Ingarden’s lectures and seminars and appropriating selected phenomenological problems and analyses.
The institutional life of this formation is perhaps even more revealing than retrospective classifications. In the summer semester of 1926, while still a student, Izydora Dąmbska organized a privatissimum devoted to Twardowski’s 1894 habilitation thesis Zur Lehre vom Inhalt und Gegenstand der Vorstellungen. Together with Blaustein, Mehlberg, Auerbach, Ginsberg, Kokoszyńska, Słoniewska, and other members of the seminar, she initiated a collective rereading of the work with the intention of preparing commentary and eventually a Polish translation. Twardowski accepted the invitation to participate with evident pleasure. Each participant was expected to comment on a portion of the text, present it to the group, and propose a translation (Kuliniak et al. 2018, 35–37).
Blaustein’s role in these meetings is particularly suggestive in light of the volume under review. At the first meeting, on April 21, 1926, he presented the prehistory of the distinction between act, content, and object before Twardowski’s own work (Twardowski 1997, 240). On June 9, Twardowski recorded a “very fine report by Blaustein on §4” (Twardowski 1997, 248; my translation). This places Blaustein’s subsequent dissertation on Husserl within an active Lvov research practice. The triadic problematic through which he approached Husserl was not simply an inherited piece of Twardowskian doctrine recalled retrospectively; immediately before the decisive phase of his work on Husserl, Blaustein was participating in a collective, critical, historical rereading of the very text in which Twardowski had formulated that problematic. The 1928 dissertation consequently appears even more clearly as an intervention emerging from the internal dynamics of Twardowski’s seminar while simultaneously testing that tradition against Husserl.
This distinction matters because a retrospective emphasis on the Warsaw logical tradition can easily distort Blaustein’s intellectual location. In Berlin, he attends Wertheimer’s course entitled “Logic”—a course situated within the Gestalt-theoretical study of thinking rather than mathematical logic—and he actively promotes work by Polish logicians, including Ajdukiewicz’s axiomatization of classical logic (pp. 125, 130). His principal concerns remained presentations, consciousness, perception, and the descriptive analysis of psychic phenomena; Płotka likewise treats logical analysis as marginal in Blaustein’s work (Płotka 2024, 4–6). Accordingly, the Twardowskian ideal of scientific philosophy should not be assimilated either to mathematical logic or to logical positivism. What Blaustein inherited was above all a research ethos of terminological clarity, explicit distinctions, argumentative control, and methodological rigor, combined with considerable freedom as to the problems pursued (Płotka 2024, 17–18).
The intellectual center of the volume is unquestionably Blaustein’s 1928 Husserl’s Theory of Act, Content and Object of Presentation. If this text occupies a privileged place, this is not simply because of its length but because it establishes the conceptual horizon within which the two shorter essays and, to a considerable extent, the correspondence are best understood. Blaustein reconstructs Husserl through the triadic problematic of act, content, and object—a framework given its most operative formulation for him by Twardowski’s habilitation thesis, though he embeds it in a wider genealogy reaching back to Bolzano and Brentano. Płotka’s monograph confirms this interpretive structure explicitly: the order of Blaustein’s analyses follows the framework developed by Twardowski, while the historical genealogy of the problem takes the reader further back into the Brentanian tradition (Płotka 2024, 154). Blaustein thus does not approach Husserl as a self-grounding beginning. He treats Husserl’s theory of intentionality as an exceptionally sophisticated reformulation of questions already posed within descriptive psychology and post-Brentanian debates on presentations.
The architecture of the dissertation makes this strategy particularly clear. After an introduction (pp. 21–23), Part 1 reconstructs the problem of act, content, and object before Husserl (pp. 23–40), moving through Bolzano, Brentano, Twardowski, and other figures in the post-Brentanian discussion. Part 2 is the long reconstructive core of the book (pp. 41–81). It begins with the concept of presentation and proceeds through consciousness, lived experience, intentional act, inner and outer experience, intentional relation, and intentional object, before turning to the multiple meanings of content: descriptive and intentional content, quality and matter, intentional and meaning essence, ideal meaning, intuitive fullness, adumbrations, and noematic sense. Only after this extensive reconstruction does Blaustein pass to Part 3, a comparatively compact critical assessment (pp. 82–108). The asymmetry is significant: Blaustein is often remembered as a critic of Husserl, but the larger part of his labor consists in reconstructing Husserl’s theory in detail and locating it within the history of the act–content–object problem.
This reconstructive project was grounded not only in close reading but also in direct philosophical contact. Blaustein’s principal textual basis is the Logical Investigations, above all its second edition, and Ideas I. He states at the outset that the reconstruction will rely mainly on these works (p. 21); in practice, Ideas I becomes especially important when he turns to reduction and the noematic side of the problem (pp. 76–80). Płotka likewise notes that references to Ideas I are comparatively sparse and mainly used to show continuity with the Logical Investigations (Płotka 2024, 153). This textual choice gains further importance from Blaustein’s biography. In 1925 he went to Freiburg, where Husserl was lecturing on phenomenological psychology and holding a seminar on the analysis and description of psychic acts; Blaustein later stressed the importance of these lectures for understanding Husserl’s conception of psychology and its relation to philosophy (Płotka 2024, 22). After completing his examinations and defending his dissertation in Lvov, he went to Berlin on a fellowship obtained through Twardowski’s support and worked there on the final version published in 1928 (Płotka 2024, 24–25). The monograph is therefore the product of an intellectual itinerary running from Lvov through Freiburg to Berlin, rather than merely a distant textual commentary on Husserl.
Blaustein’s procedure in Part 2 is patient and, in the best sense, scholastic. He follows the internal differentiation of Husserl’s concepts rather than simply translating them into Twardowskian terminology. Especially important is his effort to distinguish the several senses in which “content” functions in Husserl. The distinction between quality and matter becomes central because matter is what gives an act its determinate objective direction, while quality determines whether the act presents, judges, wishes, and so forth. From there Blaustein tracks increasingly complex constructions—intentional essence, meaning essence, ideal meaning, fullness, and noematic sense—and asks how they relate to the descriptive structure of the act. This makes the dissertation a systematic reconstruction as well as a critique. Its historical framing may be Twardowskian, but the reconstruction itself takes Husserl seriously enough to expose the internal complexity of a theory that cannot simply be reduced back to Brentano or Twardowski.
The treatment of “content” is the point at which the scale of this reconstructive effort becomes most visible. Blaustein uses synoptic diagrams to clarify the relations among these different senses of “content”; the comprehensive diagram on pp. 80–81 is particularly revealing. Such schemata are not merely pedagogical devices; they express Blaustein’s methodological demand that terminology be answerable to distinguishable structures of experience. Here the Twardowskian act–content–object framework provides the basis for assessing Husserl’s conceptual changes. The movement from the Logical Investigations to Ideas I is therefore decisive. With the introduction of noema and noematic sense, the relation between content and object can no longer simply be described in the vocabulary of psychic components of an act. Blaustein reconstructs this change, but he also asks whether the new ideal correlates add descriptively necessary distinctions or instead multiply entities and senses of “content” without sufficient methodological gain. His later objection to the noema is prepared by this reconstructive work rather than appended to it from an external standpoint.
The critical part is shorter, sharper, and deliberately selective. Blaustein himself cautions that he is evaluating only the views reconstructed from the Logical Investigations and, partly, Ideas I, not Husserl’s still largely unpublished subsequent development (p. 82). He then tests a series of key theses for their descriptive legitimacy: consciousness and lived experience, sensations, the apprehension–interpretation schema, sensory properties, the identity of matter, intentionality, intuitive fullness, adumbration, and noema (pp. 83–105). The result is not a wholesale rejection. Blaustein accepts Husserl’s quality–matter distinction while rejecting the identity of matter across numerically distinct acts (pp. 97–98); he also regards the theory of adumbration as basically correct, though in need of revision, while treating presenting sensory content as accompanying rather than forming part of the act (pp. 103–5). His concluding summary is correspondingly reconstructive: the intentional content of an act is reduced principally to its matter, while other elements are redistributed within a descriptive-psychological account (pp. 106–8). Critique here functions as reappropriation. The final pages make especially clear that Blaustein’s aim is constructive revision rather than simple rejection. His final synoptic diagram, offered after the critical examination (p. 107), deliberately rewrites the one produced at the end of the reconstructive section. The act is now treated, in the relevant sense, as composed of quality and matter; intentional content is identified principally with matter; the representative or sensory content accompanies the act rather than forming one of its constitutive psychic components; and several further Husserlian notions are either eliminated or left under a question mark. At the same time, this is not simply a return to Twardowski’s 1894 theory. Blaustein retains Husserlian distinctions he considers descriptively justified, above all the quality–matter articulation of intentional acts, and he also preserves elements of the analyses of fulfillment and adumbration while relocating their components. The result is already recognizably Blaustein’s own theoretical position. This matters for the later trajectory of his work: as Płotka notes, Blaustein himself regarded the 1928 study as the basis of the “general theory of presentations” that would subsequently be applied and developed in his books on imaginative, schematic, and symbolic presentations (Płotka 2024, 28). The dissertation is thus central not only to his reception of Husserl but to the genesis of the independent descriptive psychology that underpins his aesthetics.
A revealing contemporary assessment of the dissertation was provided by Roman Ingarden in his 1929 review. Ingarden’s judgment is considerably more differentiated than the later shorthand according to which Blaustein simply “misread” Husserl. He regards the historical section as informative, but considers the reconstructive part the strongest section of the book, praising the clarity of exposition and the author’s ability to navigate the difficult and often shifting terminology of Husserl’s writings. His reservations concern, among other things, Blaustein’s tendency to move too readily between the Logical Investigations and Ideas I and to introduce into his exposition a terminology that does not always coincide with Husserl’s own (Ingarden 1929, 315). Ingarden is substantially more critical of the final part of the dissertation. Here his principal objection is methodological: instead of merely confronting Husserlian theses with alternative conceptual constructions, Blaustein should have undertaken independent analyses of the phenomena themselves and allowed the results of such analyses to decide between competing theories. Yet even this criticism ends on an unmistakably positive note. Ingarden emphasizes the clarity, precision, and construction of Blaustein’s first independent philosophical work and treats its shortcomings as those of a young author confronting exceptionally difficult problems (Ingarden 1929, 316).
Ingarden’s contemporary verdict also provides an instructive background to Płotka’s more recent argument that Blaustein partly “misread” Husserl’s anti-psychologism by failing to register adequately the methodological significance of constitution, reduction, and the transition from real to intentional or phenomenological content (Płotka 2024, 180–81). This is a serious objection and should certainly be part of the discussion generated by the present edition. I would nevertheless formulate the verdict more cautiously. Blaustein’s preference for the descriptive-psychological horizon of the Logical Investigations is not simply a failure to notice that Husserl later moved beyond it. It is also a methodological decision made by a reader who knew Ideas I, had attended Husserl’s 1925 lectures on phenomenological psychology, and was explicitly interested in determining what could survive as a descriptively controllable theory of experience. The issue is therefore not only whether Blaustein “got Husserl right,” but also whether he was entitled to separate the descriptive achievements of phenomenology from the transcendental interpretation Husserl increasingly gave them. The present volume makes it possible to reopen that question with far greater precision than was previously possible in English.
This is also why the 1928 monograph organizes the remainder of Part 1. The first of the two shorter texts, “An Attempt at a Critical Assessment of Phenomenology” (pp. 109–12), originally delivered in two parts before the Polish Philosophical Society, shifts the center of gravity from Husserl’s detailed theory of act, content, and object to the more general status of phenomenology as method and science. Blaustein isolates the status of general objects, the epistemic role of Wesensschau, the distinction between phenomenology in the strict and broad senses, and the possibility of phenomenology as an eidetic discipline. The later “Edmund Husserl and His Phenomenology” has a different function: it situates Husserl’s international influence (pp. 113, 118–19) while reiterating Blaustein’s reservations about phenomenological theory (p. 118). The shift in genre is philosophically revealing: the same concerns are successively staged as dissertation, critical report, and broader presentation for a cultivated readership.
The contrast between the two short pieces also deserves attention. The 1928/29 “Attempt” is not simply a summary of the dissertation. Its compression permits Blaustein to make explicit the methodological consequence that remained more dispersed in the longer study: phenomenology in the strict Husserlian sense, as an a priori eidetic science grounded in Wesensschau, is precisely what he finds difficult to justify, whereas a broader phenomenology can be retained if it is understood as an empirical and descriptive investigation of types of lived experience (pp. 109–12). The 1930 essay, by contrast, is less a manifesto of opposition than a retrospective positioning of Husserl and his influence. It combines criticism with unmistakable respect for the philosophical seriousness of Husserl’s enterprise (p. 122). Read after the dissertation, the two texts therefore reveal complementary sides of Blaustein’s relation to phenomenology: methodological resistance to its eidetic and transcendental self-interpretation, and continued appropriation of its descriptive achievements. This helps prevent the recurrent shorthand of describing him simply as an “anti-Husserlian” author.
Part 2, containing twenty-two letters to Twardowski, is therefore much more than a documentary appendix. Its chronological range extends from 1927 to 1937, but its real center of gravity lies in the Berlin correspondence of late 1927 and early 1928 (pp. 125–54), when Blaustein was revising the dissertation and testing his own position against a new intellectual environment. Read after the philosophical texts, the letters let us observe a position in formation. The first Berlin letter already lists a strikingly broad program: Stumpf’s “Main Problems of Philosophy,” Wertheimer’s logic, Lewin’s child psychology, Dessoir’s philosophy of art, and Köhler’s philosophical and biological psychology (p. 125). This combination is revealing. The young Blaustein is not entering Berlin as the representative of a narrowly defined philosophical school. He is looking for methodological resources across philosophy and psychology while remaining firmly anchored in Twardowski’s training.
The letter of February 13, 1928 is especially important. Blaustein reports that repeated discussions with Stumpf, Hoffmann, Lewin, Baumgardt, and others forced him to become increasingly precise about his own position; he had systematized his objections and presented them to Köhler, and he now intended to expose what he called the “basic dogmatic assumptions of phenomenology” (p. 152). The passage supplies an unusually concrete background to the shorter critical paper of 1928/29. It also shows why Berlin should not be understood merely as an episode in Blaustein’s biography: here his Twardowskian descriptive training encounters Gestalt psychology and a research culture in which philosophical analysis and empirical or experimental psychology remained in active exchange. His later interest in whether experimental procedures might be incorporated into descriptive psychology is already foreshadowed by this context.
The picture is independently confirmed by the Twardowski–Stumpf correspondence. In a postcard sent from Berlin-Lichterfelde on January 30, 1928, Stumpf thanks Twardowski for material conveyed “durch Herrn Dr. Blaustein” and, in the same message, expresses satisfaction that Twardowski is representing “die methodischen Grundsätze unseres gemeinschaftlichen Lehrers Brentano” with such success in Lvov (Stumpf 1928). The document is brief, but unusually suggestive. At exactly the moment when Blaustein’s own letters show him absorbing the Berlin environment, he appears in the correspondence of two senior Brentanians as a concrete intermediary between them. It therefore strengthens the impression that his encounter with Stumpf and Gestalt psychology should be understood as an expansion and modernization of a Brentano–Twardowski methodological formation, rather than as a move away from an intellectual identity supposedly centered on formal logic.
The correspondence simultaneously broadens the picture beyond the Husserl polemic. Blaustein appears as an organizer and cultural intermediary, trying to promote Twardowski and Polish philosophy in Germany, to establish contacts between journals, and to imagine new forms of international philosophical cooperation. These activities are particularly instructive for the question of Twardowski’s school discussed above. Blaustein is clearly proud of his Lvov formation and treats Twardowski as his central intellectual authority, but his loyalty does not express itself as adherence to a closed doctrine. What he carries abroad is a style of scholarly work and a network of problems; once abroad, he actively exposes both to new influences. The letters thus show Twardowski’s “school” operating less as a doctrinal system than as an intellectual formation capable of producing divergent research programs.
They also introduce a different register of philosophical writing. Unlike the dissertation and the two shorter essays, the letters do not present finished arguments in systematic order. Their value lies in their fragmentary immediacy: research intentions, doubts, alliances, practical difficulties, and changes of emphasis appear before they take final form in print. This makes the correspondence arguably the most dynamic part of the volume. It enables the reader to see not only what Blaustein eventually argued, but how he moved toward a position—between loyalty to Twardowski, sustained respect for Husserl, and increasing openness to Gestalt psychology and to a more plural conception of psychological method.
As an edition, the book is a major achievement. Its strength lies not only in making this body of material available in English, but also in the precision of its editorial conception. Płotka has not assembled a miscellaneous anthology. He has isolated a coherent dossier centered on Blaustein’s relation to Husserl and descriptive psychology and complemented it with exactly the sort of correspondence needed to illuminate the genesis and intellectual environment of that engagement. The resulting selectivity gives the volume a clear profile and creates a firm basis for further work. The obvious desideratum of a complementary collection devoted to other areas of Blaustein’s thought has already been partly fulfilled by the thematic double issue of Phainomena, The Thought of Leopold Blaustein in Context: Critical Essays and Materials, edited by Płotka and Andrej Božič in 2025. That issue presents nine critical essays and a substantial set of English translations extending the picture toward aesthetics, film and radio, humanistic psychology, relations with other members of Twardowski’s milieu, Ingarden, and Stumpf (Płotka and Božič 2025). Rather than exposing a lacuna in the Brill volume, the comparison clarifies its function: the source edition reviewed here concentrates on the Husserlian and descriptive-psychological foundations, while the Phainomena issue follows several of the lines that Blaustein subsequently developed from them.
The value of the edition also depends, of course, on the reliability of its English translation, particularly in the 1928 dissertation, where terminological distinctions constitute part of the philosophical argument itself. Here the edition is well suited to scholarly use. Płotka’s translation maintains a remarkably stable vocabulary—“presentation,” “content,” “matter,” “presenting content,” “representative,” “intuitive fullness,” “adumbration,” and “noematic sense”—while retaining the relevant German terms whenever the English equivalent alone might conceal a distinction in Husserl’s vocabulary. This is especially important because Blaustein’s own argument repeatedly turns on the proliferation and equivocation of Husserlian terminology. The preservation of the original 1928 pagination in the body of the English text, the explicit marking of translators’ additions by square brackets, references to established English translations of Husserl and Twardowski, and the reproduction of Blaustein’s synoptic diagrams make the translation readily controllable against its sources. A terminological glossary or a brief translator’s note explaining the principal Polish–German–English correspondences would have made this apparatus still more convenient; nevertheless, the edition provides enough textual transparency for scholars to work with the English version with a high degree of confidence.
The wider interpretive payoff becomes visible once one asks what kind of philosopher emerges from these materials. Read superficially, the volume might encourage the picture of a Twardowskian critic of Husserl. Read more closely, and especially alongside Płotka’s monograph, the picture is more complex. The juxtaposition is intentional: the 2024 monograph supplies the broad systematic reconstruction, the present edition permits that reconstruction to be checked against Blaustein’s texts and correspondence, and the 2025 Phainomena issue demonstrates how the same intellectual profile can be pursued into areas that lie beyond the present volume’s deliberately narrow focus. Płotka is persuasive in rejecting the notion that Blaustein’s originality consists in combining a logical-analytic Lvov–Warsaw method with Husserlian phenomenology. His discussion of “analytic phenomenology” emphasizes that logical-conceptual analysis occupies only a marginal place in Blaustein and that the relevant Twardowskian inheritance is primarily descriptive-psychological (Płotka 2024, 4–6). The present edition provides particularly strong source evidence for this claim. Blaustein approaches Husserl as a thinker formed by the Brentanian–Twardowskian problematic of presentations, but he is willing to appropriate Husserlian distinctions, to criticize Twardowski, and to incorporate methodological stimuli from Gestalt psychology. His relation to descriptive psychology is therefore foundational without being merely conservative.
This also suggests a slight shift in how Blaustein should be classified. To call him simply a member of the Lvov–Warsaw School is historically defensible, but philosophically insufficient unless one specifies which current of that heterogeneous formation is at issue. Ingarden’s 1936 testimony strengthens this point considerably: from within the interwar situation itself, the Lvov school created by Twardowski and the later Warsaw logistic movement could still be distinguished from one another, while Blaustein was explicitly placed among Twardowski’s younger pupils associated primarily with descriptive and experimental psychology (Ingarden 1974, 102). The Ingarden–Twardowski correspondence further confirms that this relationship remained active during Blaustein’s formative years. Writing from Freiburg in 1927, Ingarden asked Twardowski to tell Blaustein that he was awaiting a letter from him and added that Husserl remembered Blaustein very favorably (Ingarden and Twardowski 2016, 351). Shortly afterwards, hearing that Blaustein might come to Marburg, Ingarden welcomed the prospect and asked Twardowski to pass on his address (Ingarden and Twardowski 2016, 359). Ingarden is thus, in an important sense, the volume’s absent interlocutor: largely outside its documentary architecture, yet continuously present in the intellectual environment in which Blaustein’s engagement with Husserl developed. The materials therefore point toward a Lvov descriptive-psychological lineage whose ideal of scientificity consists in clear description, conceptual discipline, classification, argumentative accountability, and openness to empirical control, rather than in the primacy of formal logic. This lineage can then interact with phenomenology without being absorbed by it. In this sense, Blaustein is perhaps best understood as a reformer of descriptive psychology who uses phenomenology as both resource and adversary. Such a characterization also helps explain the continuity between his early descriptive psychology and his later work on aesthetic experience, media, and humanistic psychology, while suggesting a similar question concerning the much less studied pedagogical and applied writings.
No account of Blaustein’s place in twentieth-century philosophy can entirely bypass the question of his Jewish background and the historical violence that shaped the fate of his work. Yet this aspect should not be framed only negatively, as if it mattered solely because Blaustein and his family later became victims of the German occupation and the Lvov ghetto. The correspondence suggests a more complex and positive dimension of his self-understanding. In the letter of January 11, 1928, Blaustein tells Twardowski that, apart from his service to science, he wants to serve “both nations that I love,” adding that three-quarters of his work is indirectly devoted to Polish philosophy; he then describes plans for cooperation with the Hebrew University in Jerusalem and for a multilingual philosophical journal linked to Hebrew intellectual life (p. 145). This is unusually direct evidence of a double cultural and intellectual loyalty rather than merely an identity retrospectively assigned to him.
That double horizon also illuminates Blaustein’s role as an intellectual mediator. He arrived in Berlin without a ready-made network, yet rapidly established contacts with leading philosophers and psychologists and promoted Twardowski’s work (pp. 125, 127–30); in the January 11 letter he also envisaged Polish-Jewish forms of scholarly cooperation (p. 145). His Jewish background thus appears in the correspondence not merely as a later tragic biographical datum but as part of his own cultural self-location and international projects.
Taken as a whole, Płotka’s edition is a work of major scholarly value. It restores texts indispensable for reconstructing Blaustein’s early development and, more broadly, for understanding a historical field in which descriptive psychology, early phenomenology, Gestalt-oriented research, and several competing ideals of scientific philosophy still interacted closely. The central 1928 dissertation gives this field its conceptual focus; the shorter essays show Blaustein reformulating its methodological consequences for different audiences; and the letters expose the intellectual, institutional, and biographical conditions under which those positions were formed. The result is more than a recovery of a neglected critic of Husserl. It is a source-based invitation to reconsider the relation between phenomenology and the descriptive-psychological traditions that preceded and accompanied it.
Płotka’s 2024 monograph, the 2025 Phainomena thematic issue, and the present 2026 source edition now provide three complementary points of access to that project: systematic interpretation, contextual and thematic development, and primary documentation. In this sense, the Brill volume is both a major editorial contribution and a basis for further research. It makes a crucial segment of Blaustein’s legacy available in a form that should stimulate not only historical work on Polish philosophy and early phenomenology, but also a broader reassessment of one of the most interesting and still underread figures of interwar philosophical psychology.
References
Ingarden, Roman. 1929. “Blaustein Leopold: Husserlowska nauka o akcie, treści i przedmiocie przedstawienia. Lwów: Archiwum Towarzystwa Naukowego we Lwowie 1928. Sprawozdanie.” Przegląd Filozoficzny 32 (4): 315–316.
Ingarden, Roman. 1963a. “Leopold Blaustein — teoretyk radia i filmu.” Zeszyty Prasoznawcze 4 (3): 86–93.
Ingarden, Roman. 1963b. Letter to the Editorial Board of Philosophical Publications, Państwowe Wydawnictwo Naukowe, March 30, 1963. Roman Ingarden Digital Archive, Jagiellonian University.
Ingarden, Roman. 1973. The Literary Work of Art: An Investigation on the Borderlines of Ontology, Logic, and Theory of Literature. Translated by George G. Grabowicz. Evanston: Northwestern University Press.
Ingarden, Roman. 1974. “Main Directions of Polish Philosophy.” Dialectics and Humanism 1 (2): 91–103.
Ingarden, Roman, and Kazimierz Twardowski. 2016. Korespondencja Romana Witolda Ingardena z Kazimierzem Twardowskim. Edited by Radosław Kuliniak, Dorota Leszczyna, and Mariusz Pandura. Kęty: Wydawnictwo Marek Derewiecki.
Kuliniak, Radosław, Dorota Leszczyna, Mariusz Pandura, and Łukasz Ratajczak, eds. 2018. Korespondencja Izydory Dąmbskiej z Romanem Witoldem Ingardenem. Kęty: Wydawnictwo Marek Derewiecki.
Płotka, Witold. 2024. The Philosophy of Leopold Blaustein: Descriptive Psychology, Phenomenology, and Aesthetics. Cham: Springer.
Płotka, Witold. 2025. “The Thought of Leopold Blaustein in Context: An Introduction.” Phainomena 34 (134–135): 5–24.
Płotka, Witold, and Andrej Božič, eds. 2025. The Thought of Leopold Blaustein in Context: Critical Essays and Materials. Phainomena 34 (134–135).
Stumpf, Carl. 1928. Postcard to Kazimierz Twardowski, January 30, 1928. Archiwum Kazimierza Twardowskiego, AKT K-02-1-35, fol. 130.
Twardowski, Kazimierz. 1997. Dzienniki. Część I: 1915–1927. Edited by Ryszard Jadczak. Toruń: Wydawnictwo Adam Marszałek.
[1] Page references without author-date identification refer to the volume under review.
