Big Think

The gap between knowing better and doing better, and how to close it

Tal Ben-Shahar explains the Knowing-Doing gap, and how our typical interventions to close it fall short every time.

It became clear to me that for myself and for others, the path to a happier, healthier, and more fulfilled life is not paved solely with additional knowledge. Rather, progress depends on finding better ways to apply the knowledge we already have in our daily lives. But how do we actually do that? How do we bridge the knowing doing gap?

The secret to reading more classics? Don’t treat them like homework.

Classics editor Henry Eliot shares his strategies for getting started, staying motivated, and finding joy in literature’s great books.

25 years later, “Donnie Darko” is finally getting a sequel

Richard Kelly's forthcoming novel, "The Philosophy of Time Travel," ties up loose ends and introduces new mysteries to the "Donnie Darko" universe. 

The case that madness is philosophy in practice

Great thinkers have long kept psychosis at a safe distance. But those asking the biggest questions may find it uncomfortably close.

Beyond the Odyssey: A beginner’s guide to Greek mythology
Classicist Natalie Haynes joins us to discuss the trials and joys of learning about ancient Greece and its myths.

Tim Brinkhof

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Black text on a light background reads "Explore our LIBRARY" with "Explore" in large font and "our LIBRARY" in smaller, uppercase font underneath.

What would you like to learn more about? We have thousands of videos from the world’s biggest thinkers to help you dive deeper into any subject.

Pause the busyness of life to reflect on ourselves, our relationships, and the Universe.
A person in traditional ceremonial attire sits on a decorated throne with gold, red, and floral patterns, wearing a tall yellow hat reminiscent of Tibetan Buddhism. The “hidden laziness” holding you back, according to a Tibetan Buddhist master
Tibetan Buddhism identifies three very different ways of wasting your life.
Pencil sketch of bare feet walking, with orange outlines of footprints marking the path on a light background. John Gray on why “progress” in politics is an illusion
In technology, we make cumulative advances that withstand time. Not so in politics and ethics, argues philosopher John Gray.
Abstract image of vertical orange and beige lines distorted by horizontal ripples on a pale blue background. How to make difficult decisions, according to philosophy
When the road runs out, you've got to make your own way.
A rainbow, often seen as a symbol of luck, arcs over a sunlit rural landscape with rolling hills, scattered trees, and hay bales under a partly cloudy sky. 3 ways to make your own luck
Be alert and be ready to jump.
Intimate interviews with the world’s biggest thinkers.
Members
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1hr 20mins
Live with Big Think: Inside “The Opt-Out Nation”
Watch our first-ever members-only event — a livestreamed conversation about our summer special issue, The Opt-Out Nation.
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19mins
The psychology of revenge, in 19 minutes
Psychologist Paul Bloom explains why morality, the thing that makes cooperation and trust possible, is also what drives cruelty, cycles of revenge, and wars where both sides believe they're the moral ones.
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13mins
Mary Beard: Why no film has ever cracked The Odyssey
Classicist Mary Beard explains why you should read The Odyssey before going to see Christopher Nolan's adaptation of the epic.
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9mins
The trick that offloads intrusive thoughts so your brain can actually work
David Epstein, author of Range and Inside the Box, breaks down what's actually happening inside the brain when we multitask, and why "just focusing" is a solution that doesn't hold up to reality.
The Universe is out there, waiting for you to discover it.
Voyager 1 Ask Ethan: If intelligent alien life exists, will we make contact?
We strongly suspect we aren't alone in the Universe, but so far, we haven't found anyone. What determines when we'll finally make contact?
A page titled “The Philosophy of Time Travel” and a folded paper with a sinister, smiling skull drawing are set against a geometric, tunnel-like background, alluding to the mysterious lessons in physics and mortality found within Donnie Darko. “Donnie Darko” offers a time travel lesson you won’t find elsewhere
Most time travel stories involve changing the past to create a better future. "Donnie Darko" subverts that expectation, and a whole lot more.
standard model color The Higgs boson’s most important puzzle remains unsolved
Predicted back in the 1960s, 2012's discovery of the Higgs boson completed the Standard Model. But the biggest Higgs puzzle still persists.
Einstein field equations This discovery is why Einstein was history’s greatest physicist
Although many of Einstein's papers revolutionized physics, there's one Einsteinian advance, generally, that towers over all the rest.
Big ideas. Thoughtful conversations. One book at a time.
A grid displays 45 colorful classic novel book covers, including titles like “Catch-22,” “Lolita,” “On the Road,” and “Infinite Jest.”. Scratching the surface: A field guide to 100 essential novels
In our age of screens and shrinking attention spans, let this analog challenge be your progress bar toward literary beauty and joy.
Book cover of “The Opposite of Happiness” by George Loewenstein, featuring a large bubble and a pin about to pop it above the title. Misery is an emotional feature, not a glitch in the system
Why do anger, regret, and shame linger? Because evolution optimized our emotions to keep us alive, not to make us happy.
Book cover of “Nary a Horse Left Standing” by Lee Alan Dugatkin, featuring an old illustration of men by a horse-drawn streetcar, with bold white and yellow text overlaid. The 19th-century veterinarian who nearly cracked one of medicine’s oldest mysteries
The Great Epizootic of 1872 gave James Law the evidence he needed to challenge centuries of thinking surrounding the origins of disease.
Book cover with the title “Kobuk the Destroyer” by Alex Davies, featuring a bear firing a cannon and a flying rabbit reminiscent of Jimmy Doolittle’s daring spirit, all set against a striking red background. The test pilot who made airplanes safer (by teaching us how to break them better)
Jimmy Doolittle pushed aircraft to their limits and, in the process, helped turn flight testing from daredevilry into a discipline.
Learn business from the world’s biggest thinkers.
Two men stand beside an early D'Ieteren motor vehicle with large wheels and a lamp, set against a brown and pink background. The 221-year-old company that reinvented itself — 4 times
This carriage maker didn’t get wiped out by the automobile. Instead, it became one of the most successful car businesses in European history.
Two scenes: Top shows climbers on an ice-covered terrain, embodying fun and success. Bottom captures an airplane in flight against a clear sky. Play it again: The causal link between fun and resilience
Fun in business is no laughing matter — it can create a golden strategic advantage and bring serious success in the long term.
Four workers assemble a large wooden tank using scaffolding and ladders at an outdoor construction site, with stacks of materials in the background. The 250-year-old company that survived by refusing to lay people off
What would your company do if it lost all its customers at once?
Book cover for "How Change Really Works" features multicolored lines radiating from a center, with one red line forming an arrow. The design reflects the dynamic process of transformation. Authors' names are displayed at the bottom. The 3 stories every leader needs to inspire successful transformations
Directives rarely inspire change. The most effective leaders use stories to make transformation memorable, resonant, and actionable.
The world, seen sideways.
A distorted 3D globe shows exaggerated elevation and depression, with color gradients of orange, white, and blue representing different surface levels. NASA image shows Earth’s lumpiness — exaggerated 10,000 times
The Earth is neither flat nor round. Actually, it's somewhere between a potato and a billiard ball.
Infographic showing Apollo mission timelines, astronaut suits, and colored orbital paths around the Moon labeled with Apollo mission numbers, highlighting milestones in crewed spaceflight. Every single crewed mission to space — on one definitive map
Big Think’s latest poster is a detailed look at humanity’s loftiest enterprise so far: making it off-planet.
A cargo ship illuminated on dark ocean water beneath dramatic lightning streaks in a night sky. Ends with a bang: Why lightning stopped stalking the Strait of Malacca
On a world map of lightning strikes, the world’s busiest sea routes glowed bright — until ships cleaned up their act.
World map showing changes in night-time radiance from 2014 to 2022; purple areas indicate dimming, yellow areas indicate brightening, with a color bar legend. How Earth’s night lights became our most honest economist
A Cold War accident became a reliable tool for using artificial lights at night to map GDP, poverty, urban sprawl, and even illegal fishing.
Where science meets the human story.
Large telescope inside an observatory dome, showing metal structure, supporting beams, and curved reflective surfaces under artificial lighting. A study claimed UFOs orbited Earth in the 1950s. Then scientists checked the math.
In 2025, two cleverly designed studies claimed to find evidence of strange objects orbiting Earth — years before humanity had put anything in space.
Two people at a protest hold signs reading "no vaccine passports" and "STOP COVID JABS FOR CHILDREN," with others standing nearby and flags visible in the background. Who pays the cost when Americans opt out of science?
Astrophysicist Adam Frank used to think the consequences of rejecting science would play out on the individual level. He's since changed his mind.
Illustration of Earth overlaid with a grid and energy types from the Kardashev Scale: Type I, II, and III, representing planetary, stellar, and galactic energy usage. A physicist explains what the Kardashev scale gets wrong
The famous framework ranks civilizations by energy use — but ignores a critical factor that can halt their progress.
A split image explores the nature of life, with a gray rock on a dark background on the left and a colored microscopic view of a cell—hinting at intelligence—in vivid detail on the right. Why organisms are more than machines
Sixty years ago, a little-known philosopher challenged how science understands life. His perspective is finding new relevance in the age of artificial intelligence.