I can, therefore I am.
Be gentle to all and stern with yourself.
To be a good loser is to learn how to win.
Be thine own palace, or the world's thy jail.
Quality is not an act, it is a habit.
Only the educated are free.
The wise does at once what the fool does at last.
By failing to prepare, you are preparing to fail.
Know or listen to those who know.
Never complain and never explain.
The thing that's tricky is sometimes the best voices - just because someone hits the big notes and sounds amazing - it doesn't necessarily mean they make the greatest artists.