When you reach the end of your rope tie a knot in it and hang on.
Franklin Roosevelt
I have not failed, I've just found 10000 ways that didn't work.
Thomas Edison
Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.
Albert Einstein
Some people never go crazy. What truly horrible lives they must lead.
Charles Bukowski
When you're in jail, a good friend will be trying to bail you out. A best friend will be in the cell next to you saying, 'Damn, that was fun'.
Groucho Marx!
It's very useful.
I've got lots more good ones. But since I didn't get no votes I won't waste my time posting anymore.