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.

You must have complete determination. The worst opponent you can come across is one whose aim has become an obsession. For instance, if a man has decided that he is going to bite off your nose no matter what happens to him in the process, the chances are he will succeed in doing it. He may be severely beaten up, too, but that will not stop him from carrying out his objective. That is the real fighter.

Art calls for complete mastery of techniques, developed by reflection within the soul.

You will never learn anything new unless you are ready to accept yourself with your limitations. You must accept the fact that you are capable in some directions and limited in others, and you must develop your capabilities.

Zen is not “attained” by mirror-wiping mediation, but by “self-forgetfulness in the existential 'present' of life here and now.” We do not “come”, we “are.” Don't strive to become, but be.

A good martial artist does not become tense, but ready.

The usefulness of the cup is its emptiness.