I sometimes try to imagine what would have happened if weโd known the bonobo first and the chimpanzee only laterโor not at all. The discussion about human evolution might not revolve as much around violence, warfare and male dominance, but rather around sexuality, empathy, caring and cooperation. What a different intellectual landscape we would occupy!
Frans de WaalThere's actually a lot of evidence in primates and other animals that they return favors.
Frans de WaalMorality, after all, has nothing to do with selflessness. On the contrary, self-interest is precisely the basis of the categorical imperative.
Frans de Waal