Previous editions are cited in Books for College Libraries, 3d ed. . In this classic text of phenomenology and existentialism, Jonas sets forth an existential interpretation of biological facts laid out in support of the claim that the mind is prefigured throughout organic existence. He further contends that life forms present themselves on an ascending scale of perception and freedom of action, reaching its apex in the human capacity for thought and morally responsible behavior. Annotation c. Book News, Inc., Portland, OR (booknews.com)