On Gratitude
Now follows [the consideration] of favor, gratitude, and ingratitude. As regards the first two, they are the inclinations which the soul has to wish and to do some good to one’s neighbor. I say, to wish, [this happens] when good is returned to one who has done some good; I say, to do, [this is the case] when we ourselves have obtained or received some good.
I am well aware that almost all people consider these effects to be good; but, notwithstanding this, I venture to say that they can have no place in a perfect man. For a perfect man is moved to help his fellow-man by sheer necessity only, and by no other cause, and therefore he feels it all the more to be his duty to help the most godless, seeing that his misery and need are so much greater.
Ingratitude is a disregard or shaking off of Gratitude, as Shamelessness is of Shame, and that without any rational ground, but solely as the result either of greed or of immoderate self-love; and that is why it can have no place in a perfect man.