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 central to human thought. It also contains a remarkable account of the aesthetic interpretations of utopian "wishful images" in fairy tales, popular fiction, travel, theater, dance, and the cinema. Volume 2 presents "the outlines of a better world." It examines the utopian systems that progressive thinkers have developed in the fields of medicine, painting, opera, poetry, and ultimately, philosophy. It is nothing less than an encyclopedic account of utopian thought from the Greeks to the present. Volume 3 offers a prescription for ways in which humans can reach their proper "homeland," where social justice is coupled with an openness to change and to the future.