Étienne Klein transforms major scientific questions into universal reflections on how we think, decide and imagine the future.
With clarity and humour, he makes the most complex ideas accessible without ever oversimplifying them.
Physicist and philosopher of science, Étienne Klein is one of France's leading voices in scientific thought.
Research Director at the CEA and Director of LARSIM, he explores the foundations of modern physics and their philosophical implications. Time, matter, vacuum, the Universe and quantum physics: he invites us to reconsider what we thought we knew.
His reflections now extend far beyond physics. Artificial intelligence, truth, misinformation, progress, innovation and exploration: Étienne Klein uses science to illuminate the major transformations of our time.
With a PhD in philosophy of science and as a lecturer at CentraleSupélec, he brings science, philosophy and society into dialogue. His gift is to make difficult questions clear without ever making them simplistic.
Author of more than thirty books, member of the French Academy of Technologies and producer of La Conversation scientifique on France Culture, Étienne Klein regularly contributes to major scientific and intellectual debates.
When our perspective is limited, our relationship with the future changes.
Étienne Klein uses science to ask essential questions: what do we really know? How do we distinguish truth from falsehood? Do machines think? Why do we seek to go beyond our limits?
When machines provide the answers, do we still know how to think?
Artificial intelligence produces impressive answers. But does it understand what it says? Étienne Klein examines the differences between calculation, knowledge, understanding and intelligence.
In a world saturated with information, believing is not the same as knowing.
Why do we so easily believe information that confirms our convictions? Étienne Klein explores our relationship with truth in the age of social media, misinformation and artificial intelligence.
Why do we need to explore in order to move forward?
Exploring, searching, inventing: human beings seem unable to accept existing boundaries. Drawing on his reflections with Thomas Pesquet, Étienne Klein examines our desire to go beyond limits and our ability to imagine the future.
We live in time. But do we know what it is?
We say that "time passes". Physics, however, tells a much stranger story. From Galileo to Einstein, Étienne Klein dismantles our intuitions to reveal one of science's greatest mysteries.
Science often begins where common sense goes wrong.
Do our senses really give us access to reality? Étienne Klein shows how physics had to move beyond the obvious in order to discover a deeply counter-intuitive world.
A fascinating reflection on perception, certainty and bias.
Innovation is not enough. We still need to know where we are heading.
Science and progress long seemed inseparable. Today, that connection is far less obvious. AI, climate, space, research and technology: Étienne Klein asks how we can build a desirable future without turning away from science.
Étienne Klein speaks at the key moments where people, performance and impact matter.
Formats adaptable to your goals and context.
A unique experience serving strong, useful messages.
Science, time, quantum physics and the Universe: discover Étienne Klein in talks and conversations where scientific rigour meets philosophy.
1:00:02
Étienne Klein explains how the principles of quantum physics are paving the way for tomorrow's technologies.
1:30:36
Relativity, symmetries and the laws of physics: Étienne Klein explores what science can teach us about the universal.
1:19:38
Science and philosophy come together to challenge our assumptions about time.
12:53
Étienne Klein examines what modern cosmology can really tell us about the origins of time and the Universe.
25:56
Can our perception of time withstand the discoveries of modern physics?
11:43
Étienne Klein reveals why the quantum vacuum is anything but empty.
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