The source of man’s moral energy is outside him, like that of his physical energy (food, air etc.). He generally ﬁnds it, and that is why he has the illusion—as on the physical plane—that his being carries the principle of its preservation within itself. Privation alone makes him feel his need. And, in the event of privation, he cannot help turning to anything whatever which is edible.
— Simone Weil, Gravity & Grace