What is the sign of a foolish man? He talks too much.
~ Talmud, Zohar, iv, 193b
The only thing to do with an idiot and a thorn is to get rid of them.
~ Talmud, Shemot Rabbah, 6, 5
One fool can ask a question that a thousand wise men cannot answer. What one fool spoils, a thousand wise men cannot repair.
~ Talmud, Torat ha-Kenaot, p. 42; Bet Jonathan, p. 8
To the wise a wink, and to the fool a fist.
~ Talmud, Midrash Mishle, 22
Ninety-nine percent of the people in the world are fools and the rest of us are in great danger of contagion.
~ Thornton Wilder