"It may strike us as odd that the idea of gain is a relatively modern one; we are schooled to believe that man is essentially an acquisitive creature and that left to himself he will behave as any self-respecting businessman would. The profit motive, we are constantly being told, is as old as man himself.. Not only is the idea of gain by no means as universal as we sometimes suppose, but the social sanction of gain is an even more modern and restricted development.”