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

If the enemy stays spirited it is difficult to crush him.

It is said the warrior's is the twofold Way of pen and sword, and he should have a taste for both Ways. Even if a man has no natural ability he can be a warrior by sticking assiduously to both divisions of the Way.

You may abandon your own body but you must preserve your honour.

In contests of strategy it is bad to be led about by the enemy. You must always be able to lead the enemy about.

The true science of martial arts means practicing them in such a way that they will be useful at any time, and to teach them in such a way that they will be useful in all things.

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.