One day,a lady talked with her friend saying that the sun is the most beautiful and useful of the celestial bodies. A gentleman who was present,answered: "Yes, Madam, the sun is a very fine body, to be sure, but in my opinion, it is not so useful as the moon."
"Why so?" asked the lady.
"Because," replied the gentleman, "the moon affords us light in the night-time, when we really want it, whereas we have the sun always with us in the day-time, when we have not so much need of it."