Two students of the yeshiva are arguing whether it is possible to smoke, studying Gemara? Unable to come to a consensus, they go to the rabbi. - Rebbe - asks one, - whether smoking when studying the Gemara? - In no case! - indignantly replies the rabbi. - You asked the wrong, - winces second student. We must ask: "The Rebbe-Leben, you can see, when you smoke, studying Gemara? ' - Well, of course! - enthusiastically replies the rabbi.