There is no such thing as maturity. There is instead an ever-evolving process of maturing. Because when there is a maturity, there is a conclusion and a cessation. That's the end. That's when the coffin is closed. You might be deteriorating physically in the long process of aging, but your personal process of daily discovery is ongoing. You continue to learn more and more about yourself every day.

p. 131 - The Warrior Within : The Philosophies of Bruce Lee (1996)