Quality is not an act, it is a habit.
It's always too early to quit.
Know or listen to those who know.
Go for it now. The future is promised to no one.
After a storm comes a calm.
Be kind whenever possible. It is always possible.
You never know what motivates you.
To be a good loser is to learn how to win.
Be gentle to all and stern with yourself.
Well done is better than well said.
Certain kinds of speed, flow, intensity, density of attacks, density of interaction... Music that concentrates on those qualities is, I think, easier achieved by free improvisation between people sharing a common attitude, a common language.