It's always too early to quit.
The wise does at once what the fool does at last.
Be gentle to all and stern with yourself.
Be kind whenever possible. It is always possible.
After a storm comes a calm.
Only the educated are free.
Do not weep do not wax indignant. Understand.
Leap, and the net will appear.
Know or listen to those who know.
By failing to prepare, you are preparing to fail.
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.