Quality is not an act, it is a habit.
Know or listen to those who know.
If you've got a talent, protect it.
By failing to prepare, you are preparing to fail.
It's always too early to quit.
If you can dream it, you can do it.
Always desire to learn something useful.
If you're going through hell, keep going.
Be gentle to all and stern with yourself.
Never complain and never explain.
The whole business of marshaling one's energies becomes more and more important as one grows older.