Pirke Avot: The Sayings of the Jewish Fathers
“ He used to say, "He whose wisdom exceeds his works, to what is he like? To a tree whose branches are many, but whose roots are few; and the wind comes and plucks it up, and overturns it upon its face, as it is said, 'And he shall be like a lonely juniper tree in the desert, and shall not see when good cometh; but shall inhabit the parched places in the wilderness, a salt land and not inhabited.' But he whose works exceed his wisdom, to what is he like? ”
