What is the universe, which we regard as "ours" not only because we live in it but because it produced us? This book is in the form of a dialogue on cosmology between the astrophysicist Michel Cassé and the philosopher Edgar Morin. It is a profound work which revels in the joy of knowledge and restores us to the universe that is in all of us, as it celebrates the "anthropo-cosmos". Michel Cassé is an astrophysicist at the Atomic Energy Commission. Edgar Morin is an internationally renowned writer and thinker.