"Recollect, Sancho," replied Don Quixote, "there are two sorts of beauty, one of the mind, the other of the body; that of the mind displays and exhibits itself in intelligence, in modesty, in honourable conduct, in generosity, in good breeding; and all these qualities are possible and may exist in an ugly man; and when it is this sort of beauty and not that of the body that is the attraction, love is apt to spring up suddenly and violently. I, Sancho, perceive clearly enough that I am not beautiful, but at the same time I know I am not hideous; and it is enough for an honest man not to be a monster to he an object of love, if only he possesses the endowments of mind I have mentioned."

-El Ingenioso Don Quijote de la Mancha, Miguel de Cervantes