“The fool folds his hands and eats his flesh” (Ecclesiastes 4:5). “The fool folds his hands” – To what is this matter analogous? To two people who were toiling in Torah; one toiled and flourished, and one toiled and abandoned it. The one who had toiled and abandoned it sees the one who flourished standing on the side of a group of the righteous, and he is standing on the side of a group of the wicked. Immediately, he “folds his hands and eats his flesh.”