" What it adds up to is that, with the advent of the pill, woman is beginning to get her finger on the genetic trigger. What she will do with it we cannot quite foresee. But it is a far cry from the bull who gets to be prolific just because he's tops at beating the daylights out all the other bulls. It may be that for homo sapiens in the future, extreme manifestations of the behaviour patterns of dominance and aggression will be evolutionary at a discount; and if that happens he will begin to shed them as once, long ago, he shed his coat of fur. "

― , The Descent of Woman