In the famous city of Chelm, Moshe and his friends had been arguing for some days and eventually, in desperation, they all agreed that he should go to the Rabbi and get his verdict on the question that had them all baffled.
"Which is more important, the sun or the moon?" Moshe asked the Rabbi.
"Why the moon, of course," replied the Rabbi after some pondering. "It shines at night, when it is needed. The sun, however, shines only during the day, when there is no need of it at all."