Spirit first, technique second.

Only a true weakling is capable of true courage.

In battle, do not think that you have to win. Think rather that you do not have to lose.

First know yourself, then know others.

What you have been taught by listening to others' words you will forget very quickly; what you have learned with your whole body you will remember for the rest of your life.

You must be deadly serious in training. When I say that, I do not mean that you should be reasonably diligent or moderately in earnest. I mean that your opponent must always be present in your mind, whether you sit or stand or walk or raise your arms.

You may train for a long time, but if you merely move your hands and feet and jump up and down like a puppet, learning karate is not very different from learning a dance. You will never have reached the heart of the matter; you will have failed to grasp the quintessence of karate-do.