We say that people are proud of being rich, or clever, or good-looking, but they are not They are proud of being richer, or cleverer, or better-looking than others. If every one else became equally rich, or clever, or good-looking there would be nothing to be proud about. It is the comparison that makes you proud: the pleasure of being above the rest. Once the element of competition has gone, pride has gone. That is why I say that Pride is essentially competitive in a way the other vices are not. The sexual impulse may drive two men into competition if they both want the same girl But that is only by accident; they might just as likely have wanted two different girls. But a proud man will take your girl from you, not because he wants her, but just to prove to himself that he is a better man than you. Greed may drive men into competition if there is not enough to go round; but the proud man, even when he has got more than he can possibly want, will try to get still more just to assert his power. Nearly all those evils in the world which people put down to greed or selfishness are really far more the result of Pride.
— C.S. Lewis in Mere Christianity