Includes bibliographical references (pages 336-360)
Includes indexes
Part I. An Introduction: Four portraits ; The pessimistic tradition ; Animals and analogy -- Part II. Homo pugnax: the violent species: Communication and instinct ; The aggression labyrinth -- Part III. Homo egoisticus: the selfish species: Evolution and natural selection ; Environment and heredity ; Stories of human evolution ; Darwinism, genetics and politics -- Part IV. Homo operans: the greedy species: Conditioning and improvisation ; Work and play -- Part V. Homo sapiens: the human species: The reductionist imperative ; Human communication ; Teaching and tradition ; The question