Just found this one amusing

"College is like looking both ways before crossing the street, then getting hit by an airplane." - Anonymous

The difference between a successful person and others is not a lack of strength, not a lack of knowledge, but rather a lack in will.
Vince Lombardi

"One of the greatest discoveries a man makes, one of his great surprises, is to find he can do what he was afraid he couldn't do."
 - Henry Ford

Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude.
Thomas Jefferson