Taanit 20a:16 The Sages further taught in praise of the reed: A person should always be soft like a reed, and he should not be stiff like a cedar. An incident occurred in which Rabbi Elazar, son of Rabbi Shimon, came from Migdal Gedor, from his rabbi’s house, and he was riding on a donkey and strolling on the bank of the river. And he was very happy, and his head was swollen with pride because he had studied much Torah. He happened upon an exceedingly ugly person, who said to him: Greetings to you, my rabbi, but Rabbi Elazar did not return his greeting. Instead, Rabbi Elazar said to him: Worthless [reika] person, how ugly is that man. Are all the people of your city as ugly as you? The man said to him: I do not know, but you should go and say to the Craftsman Who made me: How ugly is the vessel you made. When Rabbi Elazar realized that he had sinn ...