Thus ends "The Possibility of altruism"
"To say that altruism and morality are possible in virtue of something basic to human nature is not to say that men are basically good. Men are basically complicated; how good they are depends on whether certain conceptions and ways of thinking have achieved dominance, a dominance which is precarious in any case. The manner in which human beings have conducted themselves so far does not encourage optimism about the moral future of the species"
Thomas Nagel, 1970