" A man who honours a worthy man soon earns a great reward; but a man who serves a wicked man ill bestows his service. There's nothing good to be said about wicked men; but... finding a worthy man is quite an event, for they are few and far between! And when one really comes to know some of those thought to be worthy men, one often finds, to put it plainly, nothing in them but a bag of wind. The wicked often deceive people and turn their heads by appearances: there are some very stupid folk who praise a man for his apparent worth, not according to his deeds or wisdom. "

― Chrétien de Troyes , Perceval: The Story of the Grail, with the Continuations