The megalomania of the genes does not mean that benevolence and cooperation cannot evolve, any more than the law of gravity proves that flight cannot evolve. It means only that benevolence, like flight, is a special state of affairs in need of an explanation, not something that just happens.
Pinker, The Blank Slate
The great thing about this quote for me is that when I read it I can hear Pinker’s voice saying it in my mind.