Think lightly of yourself and deeply of the world

If you want to learn the craft of war, ponder over this book. The teacher is as a needle, the disciple is as thread. You must practice constantly.

If you do not control the enemy, the enemy will control you

See to it that you temper yourself with one thousand days of practice, and refine yourself with ten thousand days of training.

The warrior is different in that studying the Way of strategy is based on overcoming men

Do nothing which is of no use.

When your opponent is hurrying recklessly, you must act contrarily and keep calm. You must not be influenced by the opponent.