Includes bibliographical references (p. 209-232) and index.
History: where did something come from? -- Necessity: why did it evolve? -- Competition, conflict and cooperation: why and how do they interact socially? -- Ideal and the material: the role of memes in evolutionary social science -- Micro and macro I: the problem of agency -- Micro and macro II: the problem of subjectivity -- Micro and macro III: the evolution of complexity and the problem of social structure -- Evolutionism and the future of the social sciences.