. . . you did not seem to me over-fond of money. And this is the way in general with those who have not made it themselves, while those who have are twice as fond of it as anyone else. For just as poets are fond of their own poems, and fathers of their own children, so money-makers become devoted to money, not only because, like other people, they find it useful, but because it's their own creation.
PlatoThe cause of all the blunders committed by man arises from this excessive self-love. For the lover is blinded by the object loved; so that he passes a wrong judgment on what is just, good and beautiful, thinking that he ought always to honor what belongs to himself in preference to truth. For he who intends to be a great man ought to love neither himself nor his own things, but only what is just, whether it happens to be done by himself, or by another.
Plato