Try to do exactly as you are taught without complaining or quibbling.

First know yourself, then know others.

One whose spirit and mental strength have been strengthened by sparring with a never-say-die attitude should find no challenge too great to handle. One who has undergone long years of physical pain and mental agony to learn one punch, one kick, should be able to face any task, no matter how difficult, and carry it through to the end. A person like this can truly be said to have learned karate.

Try to do exactly as you are taught without complaining or quibbling.

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.

Karate begins and ends with courtesy.

Don't pretend to be a great master and don't try to show off your strength.