I have a few on my fridge.

"I can resist everything except temptation."  Oscar Wilde

"If at first you don't succeed, try, try, and try again.  Then give up.  There's no use being a damn fool about it."

"The only thing a lawyer won't queston is the legitimacy of his mother."  Both W.C. Fields.

"Those are my principles.  If you don't like them, I have others."

"The secret of life is honesty and fair dealings.  If you can fake that, you've got it made."  Both Groucho Marx.