Mishnayos Avos Perek 3 Mishnah 17

Rabbi Elazar ben Azariah said: Where there is no Torah, there is no right conduct; where there is no right conduct, there is no Torah. Where there is no wisdom there is no fear of God; where there is no fear of God, there is no wisdom. Where there is no understanding, there is no knowledge; where there is no knowledge, there is no understanding. Where there is no bread, there is no Torah; where there is no Torah, there is no bread. He used to say: one whose wisdom exceeds his deeds, to what may he be compared? To a tree whose branches are numerous but whose roots are few, so that when the wind comes, it uproots it and overturns it, as it is said, “He shall be like a bush in the desert, which does not sense the coming of good. It is set in the scorched places of the wilderness, in a barren land without inhabitant” (Jeremiah 17:6). But one whose deeds exceed his wisdom, to what may he be compared? To a tree whose branches are few but roots are many, so that even if all the winds in the world come and blow upon it, they cannot move it out of its place, as it is said, “He shall be like a tree planted by waters, sending forth its roots by a stream. It does not sense the coming of heat, its leaves are ever fresh. It has no care in a year of drought; it does not cease to yield fruit” (ibid, 17:8).