Midrash su Salmi 58:2

R. Ila'a said: "The world would not have been able to exist were it not for the one who restrains himself in strife (keeps silent); as the passage says (Job 26, 7) Hangeth the earth over [for the sake of those who consider themselves as] nothing." R. Abahu said: "For the one who makes himself like nothing, as it is said (Deut. 33, 27) And underneath are the everlasting arms." R. Isaac said: "What is the meaning of the passage (Ps. 58, 2) Do ye indeed speak as a righteous company? Do ye judge with equity the sons of men? i.e., with what shall a man occupy himself in this world? He should make himself dumb. One might think that even to study the Torah one is allowed to make himself dumb; it therefore says, speak as righteous. Perhaps one will think that one is allowed to exalt himself [with the Torah]. The passage therefore says, Judge with equity, the sons of men."