When the thunderclap comes, there is no time to cover the ears.

The military has no constant form, just as water has no constant shape - adapt as you face the enemy, without letting them know beforehand what you are going to do.

Factors in the art of warfare are: First, calculations; second, quantities; third, logistics; fourth, the balance of power; and fifth, the possibility of victory is based on the balance of power.

Weigh the situation, then move.

Perfection in war lies in so sapping your opponents will that he surrenders without fighting.

Should the enemy strengthen his van, he will weaken his rear; should he strengthen his rear, he will weaken his van; should he strengthen his left, he will weaken his right; should he strengthen his right, he will weaken his left. If he sends reinforcements everywhere, he will everywhere be weak.

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