Never complain and never explain.
The wise does at once what the fool does at last.
Be thine own palace, or the world's thy jail.
The secret of getting ahead is getting started.
If you've got a talent, protect it.
Things do not happen. Things are made to happen.
Always desire to learn something useful.
Know or listen to those who know.
Expect problems and eat them for breakfast.
It's always too early to quit.
As man sows, so shall he reap. In works of fiction, such men are sometimes converted. More often, in real life, they do not change their natures until they are converted into dust.
There's time enough, but none to spare.