It's always too early to quit.
What you do today can improve all your tomorrows.
Do not weep do not wax indignant. Understand.
To know oneself, one should assert oneself.
If you think you can do it, you can.
Never complain and never explain.
I can, therefore I am.
If you've got a talent, protect it.
Be thine own palace, or the world's thy jail.
Quality is not an act, it is a habit.
You can be in Tokyo or Alberta at four in the morning in your hotel and you can still practice if you feel like it. A trombone cannot do that at four in the morning.