It's always too early to quit.
I can, therefore I am.
You never know what motivates you.
Know or listen to those who know.
The secret of getting ahead is getting started.
Expect problems and eat them for breakfast.
Things do not happen. Things are made to happen.
Be thine own palace, or the world's thy jail.
Leap, and the net will appear.
If you've got a talent, protect it.
If you are going to throw a club, it is important to throw it ahead of you, down the fairway, so you don't have to waste energy going back to pick it up.