James Hartle - Philosophy of Physics and Cosmology

The observable universe may contain two trillion galaxies and there may be innumerable universes. Is there ultimate unification of fundamental forces, a final theory of matter and energy, space and time? We seek deep harmony, search for deep meaning. Free access to Closer to Truth’s library of 5,000 videos: Watch more interviews on Philosophy of Physics and Cosmology: James B. Hartle is Research Professor and Emeritus Professor of Physics at the University of California, Santa Barbara. Register for free at for subscriber-only exclusives: Closer to Truth, hosted by Robert Lawrence Kuhn and directed by Peter Getzels, presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers.