One who has few must prepare against the enemy; one who has many makes the enemy prepare against him.

To plan secretly, to move surreptitiously, to foil the enemy's intentions and balk his schemes, so that at last the day may be won without shedding a drop of blood.

It is the business of a general to be quiet and thus ensure secrecy; upright and just, and thus maintain order.

When campaigning, be swift as the wind; in leisurely march, majestic as the forest; in raiding and plundering, like fire; in standing, firm as the mountains. As unfathomable as the clouds, move like a thunderbolt.

If those who are sent to draw water begin by drinking themselves, the army is suffering from thirst.

Do not swallow bait offered by the enemy. Do not interfere with an army that is returning home.

Know the enemy and know yourself.