"The last decade has seen a steady increase in the application of concepts from the theory of games to the study of evolution. Fields as diverse as sex ratio theory, animal distribution, contest behaviour and reciprocal altruism have contributed to what is now emerging as a universal way of thinking about phenotypic evolution."

“It is an occupational risk of biologists to claim, towards the end of their careers, that the problems which they have not solved are insoluble.”

“Paradoxically, it has turned out that game theory is more readily applied to biology than to the field of economic behavior for which it was originally designed”

“Evolutionary game theory is a way of thinking about evolution at the phenotypic level when the fitnesses of particular phenotypes depend on their frequencies in the population.”

“Darwin's theory of evolution by natural selection is the only workable explanation that has ever been proposed for the remarkable fact of our own existence, indeed the existence of all life wherever it may turn up in the universe.”

“It is in the nature of science that once a position becomes orthodox it should be suggested to criticism.... It does not follow that, because a position is orthodox, it is wrong.”

“Natural selection is the only workable explanation for the beautiful and compelling illusion of 'design' that pervades every living body and every organ. Knowledge of evolution may not be strictly useful in everyday commerce. You can live some sort of life and die without ever hearing the name of Darwin. But if, before you die, you want to understand why you lived in the first place, Darwinism is the one subject that you must study.”