The answers to such questions are important because so many non-biologists believe that the social behaviour of animals consists of nothing but strife and manipulation. If animal nature is the result of the competitive process of Darwinian evolution, then surely it must also be ruthlessly competitive. Such a conclusion does not follow from an acceptance of Darwinism. It is also a travesty of what biologists have observed and what most now believe.

Diego Gambetta, Trust - Making and Breaking…, loc. 239