"It's a sin to go to bed on the same day you get up."

So said Jimmy Walker, the fun-lovin' Mayor of New York City in the '20s, according to a site for Night People. Finally, a resource for we who suffer under the Tyranny of the Day People. And it's all biological, innit? It says that a Night Person is "an individual whose natural body rhythms are such that he or she is most active and alert during the evening and night and is least active and alert during the pre-dawn and daytime hours".
Here are a couple more good night quotes...

"Those who dream by day are cognizant of many things which escape those who dream only by night."
-- Edgar Allan Poe

"I stayed up all night playing poker with tarot cards. I got a full house and four people died."
-- Stephen Wright