He whose wisdom is more abundant than his works, to what is his like? To a tree whose branches are abundant but whose roots are few; and the wind comes and uproots it and overturns it (as it is written, “He shall be like a tamerisk in the desert and shall not see when good cometh; but shall inhabit the parched places in the wilderness”). But he whose works are more abundant than his wisdom, to what is he like? To a tree whose branches are few but whose roots are many; so that even if all the winds in the world come and blow against it, it cannot be stirred from its place (as it is written, “He shall be as a tree planted by the waters, and that spreadeth out his roots by the river, and shall not fear when heat cometh, and his leaf shall be green; and shall not be careful in the year of drought, neither shall cease from yielding fruit”).
—Mishnah Aboth, 3:18 (with Jeremiah 17:6, 8)