In the spirit of Darwinian evolution, Henri Bergson, with this volume, makes the philosophical argument that morality and religion are the “natural” and necessary products of man’s evolution. With a look which extends back some 2,400 years to the ancient Greek philosophers, Bergson traces the evolution of man’s instinct, intelligence and intuition and shows how necessary their interactions were in the development of human societies, morality and religion and he looks ahead to the shapes they must take if man is to survive himself.