By knowing things that exist, you can know that which does not exist.

Crossing at a ford occurs often in a man's lifetime. It means setting sail even though your friends stay in harbour, knowing the route, knowing the soundness of your ship and the favour of the day.

This is truth: When you sacrifice your life, you must make fullest use of your weaponry. It is false not to do so, and to die with a weapon as yet undrawn.

A man cannot understand the art he is studying if he only looks for the end result without taking the time to delve deeply into the reasoning of the study.

In battle, if you you make your opponent flinch, you have already won.

True warriors are fierce because their training is fierce.

The ultimate aim of martial arts is not having to use them