In his widely acclaimed trilogy Irving Singer traced the development of the concept of love in history and literature from the Greeks to the twentieth century. Now in a sequel to his previous work, Singer explores a different approach. A "systematic mapping" of the various facets of love, the present volume is an extended essay that offers a philosophical and psychiatric theory of his own. Rich in insight into literature, the history of ideas, and the complexities of our being, is a thought-provoking inquiry into fundamental aspects of all human relationships.