Equality is not the empirical claim that all groups of humans are interchangeable; it is the moral principle that individuals should not be judged or constrained by the average properties of their group.
Steven PinkerMorality is not just any old topic in psychology but close to our conception of the meaning of life. Moral goodness is what gives each of us the sense that we are worthy human beings.
Steven PinkerSome people believe that the nuclear bomb should be awarded the Nobel Peace Prize, since it scared the major powers away from war by equating it with doomsday.
Steven PinkerMaybe philosophical problems are hard not because they are divine or irreducible or meaningless or workaday science, but because the mind of Homo sapiens lacks the cognitive equipment to solve them. We are organisms, not angels, and our minds are organs, not pipelines to the truth. Our minds evolved by natural selection to solve problems that were life-and-death matters to our ancestors, not to commune with correctness ot to answer any question we are capable of asking.
Steven Pinker