In this revised edition of his classic, Richard Dawkins demonstrates how cooperation can evolve even in a basically selfish world. Contains two new chapters and a wealth of new insights into the biological world.--From publisher description.

Why are people? -- The replicators -- Immortal coils -- The gene machine -- Aggression : stability and the selfish machine -- Genesmanship -- Family planning -- Battle of the generations -- Battle of the sexes -- You scratch my back, I'll ride on yours -- Memes : the new replicators -- Nice guys finish first -- The long reach of the gene.