“I want to believe that in his struggle with nature the genius of man has struggled with physical love too, as with an enemy, and that, if he has not conquered it, he has at least succeeded in tangling it in a net-work of illusions of brotherhood and love; and for me, at any rate, it is no longer a simple instinct of my animal nature as with a dog or a toad, but is real love, and every embrace is spiritualised by a pure impulse of the heart and respect for the woman.”

Source: Wikiquote