A realistic study of man’s primary di­mensions and roles that breaches custo­mary bounds to the consideration of man to draw closer to the quintessence of man than ever before.   Paul Weiss moves beyond the point where psychologists, psychiatrists, ethi­cists, and physiologists usually stop to make evident how man is at once pri­vate and public, with an I, a me, native rights, and responsibility, able to be and to function together with others in so­ciety and in the cosmos.   He examines the you we come to know as we confront other men, show­ing this to be both accountable and re­sponsible, with distinctive values and powers, maintained from within and ap­proached from without. You is con­trasted and compared with the me, what is publicly available to each alone, known and sustained by a radically private I. In opposition to contemporary thought, Weiss shows that I has a being, nature, and power of its own, able to make use of the self and mind, and to sustain the you and the me. These explorations pre­pare the way for a novel examination of different types of we—those that govern men, those with which they interplay, and those that, together with them, con­stitute the groups, societies, and states in which men live together.   His final section deals with the dif­ference and relations between the they and the others in which he provides a fresh examination of the way men and their lived-in bodies both stand apart from and fit in the cosmos. In discussing these pivotal notions he extends our comprehension of such central topics as the difference between freedom and lib­erty, the nature of self-consciousness, the rights of the subhuman, the nature of the physical world, abortion, behav­iorism, mental health, biography, fic­tion, and the differences between men, animals, and things.