The Principle of Hope is one of the great works of the human spirit. It is a critical history of the utopian vision and a profound exploration of the possible reality of utopia. Even as the world has rejected the doctrine on which Bloch sought to base his utopia, his work still challenges us to think more insightfully about our own visions of a better world.

The Principle of Hope is published in three volumes: Volume 1 lays the foundations of the philosophy of process and introduces the idea of the Not-Yet-Conscious -- the anticipatory element that Bloch sees as...