ONE day, Naisr-ed-din ascended the pulpit of the Mosque, and thus
addressed the congregation:--"Oh, true believers, do you know what I am
going to say to you?" "No," responded the congregation. "Well, then,"
said he, "there is no use in my speaking to you." And he came down from
the pulpit. He went to preach a second time, and asked the congregation,
"Oh, true believers, do you know what I am going to say to you?" "We
know," replied the audience. "Ah, as you know," said he, quitting the
pulpit, "why should I take the trouble of telling you?" When next he
came to preach, the congregation resolved to try his powers; and when he
asked his usual question, replied, "Some of us know, and some of us do
not know." "Very well," said he, "let those who know, tell those who do
not know."--_Turkish Jest-book._