Egoism and altruism are ideas we have about human nature. Historically, one has tended to arise in response to the other. In the ancient world, for example, it is generally in the times and places that one sees the emergence of money and markets that one also sees the rise of world religions-Buddhism, Christianity, and Islam. If one sets aside a space and says, "Here you shall think only about acquiring material things for yourself," then it is hardly surprising that before long someone else will set aside a countervailing space and declare, in effect: "Yes, but here we must contemplate the fact that the self, and material things, are ultimately unimportant."