War is a matter of vital importance to the state; the province of life or death; the road to survival or ruin. It is mandatory that it be thoroughly studied.

The control of large numbers is possible, and like unto that of small numbers, if we subdivide them.

Opportunities multiply as they are seized.

Do not engage an enemy more powerful than you. And if it is unavoidable and you do have to engage, then make sure you engage it on your terms, not on your enemy's terms.

The clever combatant looks to the effect of combined energy, and does not require too much from individuals. Hence his ability to pick out the right men and utilize combined energy

He who relies solely on warlike measures shall be exterminated; he who relies solely on peaceful measures shall perish.

Rely not on the likelihood of the enemy's not coming, but on our own readiness to receive him