Homosexuality is regarded as shameful by barbarians and by those who live under despotic governments just as philosophy is regarded as shameful by them, because it is apparently not in the interest of such rulers to have great ideas engendered in their subjects, or powerful friendships or passionate love - all of which homosexuality is particularly apt to produce.
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