Talmud su Geremia 17:6

Rabbi Hanina ben Dosa would say: Anyone whose fear of sin precedes his wisdom, his wisdom will endure, as it says (Psalms 111:10), “The beginning of wisdom is fear of the Eternal.” He would also say: Anyone whose actions are greater [than his wisdom, his wisdom will endure], as it says (Exodus 24:7), “We will do, and then we will understand.”
They asked Rabban Yohanan ben Zakkai: A wise person who fears sin – what is he like? He replied: Like a craftsman with his tool in hand. Then they asked: A wise person who does not fear sin – what is he like? He replied: Like a craftsman who does not have his tool in hand. Then they asked: A person who fears sin but is not wise – what is he like? He replied: Like someone who does not know the craft, but has a tool in his hand.
Rabbi Elazar ben Azariah would say: If there is no Torah, there is no common decency. [If there is no common decency, there is no Torah.] He would also say: A person who has done good deeds, and has learned a lot of Torah – what is he like? Like a tree that stands near the water, whose branches are small, but whose roots are so strong that even if the four winds of the world all came and blew at it, it could not be moved from its place, as it says (Psalms 1:3), “He is like a tree planted by (streams of) water.” But a person who has not done good deeds and studies Torah, what is he like? Like a tree that stands in the desert, with small branches and small roots, and when a wind comes and blows at it, it uproots it and flips it over on its top, as it says (Jeremiah 17:6), “You will be like a bush in the desert.”
Rabban Gamliel would say: Make for yourself a teacher. Acquire for yourself a friend. A teacher for wisdom and a friend to study with. Remove yourself from all doubts, and do not get used to tithing by estimation.