It's always too early to quit.
Problems are not stop signs, they are guidelines.
Who seeks shall find.
The dog that trots about finds a bone.
Expect problems and eat them for breakfast.
Never complain and never explain.
Leap, and the net will appear.
What you do today can improve all your tomorrows.
By failing to prepare, you are preparing to fail.
You never know what motivates you.
The great accomplishment of Jobs's life is how effectively he put his idiosyncrasies - his petulance, his narcissism, and his rudeness - in the service of perfection.