Only a true weakling is capable of true courage.

Only through training will a person learn his own weaknesses... He who is aware of his weaknesses will remain master of himself in any situation.

Karate begins and ends with courtesy.

Hoping to see karate included in the universal physical education taught in our public schools, I set about revising the kata so as to make them as simple as possible. Times change, the world changes, and obviously the martial arts must change too. The karate that high school students practice today is not the same karate that was practiced even as recently as ten years ago [this book was written in 1956], and it is a long way indeed from the karate I learned when I was a child in Okinawa.

It is important that karate can be practiced by the young and old, men and women alike. That is, since there is no need for a special training place, equipment, or an opponent, a flexibility in training is provided such that the physically and spiritually weak individual can develop his body and mind so gradually and naturally that he himself may not even realize his own great progress.

In karate, hitting, thrusting, and kicking are not the only methods, throwing techniques and pressure against joints are included … all these techniques should be studied referring to basic kata

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