Judo helps us to understand that worry is a waste of energy.

In Randori we teach the pupil to act on the fundamental principles of Judo, no matter how physically inferior his opponent may seem to him, and even if by sheer strength he can easily overcome him; because if he acts contrary to principle his opponent will never be convinced of defeat, no matter what brute strength he may have used.

Judo is a study of techniques with which you may kill if you wish to kill, injure if you wish to injure, subdue if you wish to subdue, and, when attacked, defend yourself

The purpose of the study of judo is to perfect yourself and to contribute to society.

For one thing, Judo in reality is not a mere sport or game. I regard it as a principle of life, art and science. In fact, it is a means for personal cultural attainment.

In an argument, you may silence your opponent by pressing an advantage of strength or of wealth, or of education. But you do not really convince him. Though he is no longer saying anything, in his heart he still keeps to his opinion, the only way to make him change that opinion is to speak quietly and reasonably. When he understands that you are not trying to defeat him, but only to find the truth, he will listen to you and perhaps accept what you tell him.

Judo is the way to the most effective use of both physical and spiritual strength.