Gogen Yamaguchi quotes:

Move quickly. Sound, calm mind. Be light in body. Have a clever mind. Master the basics.

Understand that the essence of martial arts is not the art itself, but what's hidden deep within yourself.

A man who has attained mastery of an art reveals it in his every action.

It is not the number of Kata you know, but the SUBSTANCE of the Kata you have acquired.

It's easy to listen to what you are taught. But it's difficult to find what you have within yourself and master it as yor own.