Never complain and never explain.
Be thine own palace, or the world's thy jail.
The dog that trots about finds a bone.
You never know what motivates you.
Be gentle to all and stern with yourself.
By failing to prepare, you are preparing to fail.
Know or listen to those who know.
It's always too early to quit.
Expect problems and eat them for breakfast.
Always desire to learn something useful.
15 minutes a day! Give me just this and I'll prove I can make you a new man.