John Leslie
Philosopher of cosmology who explores big-picture questions about existence, purpose, and the probabilistic and philosophical implications of cosmology.
Best podcasts with John Leslie
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Mar 18, 2026 • 27min
Asking Ultimate Questions
Paul Davies, cosmologist and writer exploring observers and purpose. Max Tegmark, physicist who links math to reality. John Leslie, philosopher probing existence and probability. Lawrence Krauss, theoretical physicist on origins and physical laws. They debate limits of science, whether math or observers come first, the multiverse, and why anything exists.
Jun 19, 2024 • 27min
Why is There Anything at All?
Philosophers and physicists discuss the profound question of why there is something instead of nothing, exploring ideas like necessary existence, the role of value, consciousness creating the universe, and ultimate explanations like theism and materialism. Guests include John Leslie, Bede Rundle, Max Tegmark, Simon Blackburn, Quentin Smith, Victor Stenger, Peter van Inwagen, John Polkinghorne, Richard Swinburne, and Paul Davies.
