War is a matter of vital importance to the state.

The skillful leader subdues the enemy's troops without any fighting.

It is the rule in war, if ten times the enemy's strength, surround them; if five times, attack them; if double, be able to divide them; if equal, engage them; if fewer, defend against them; if weaker, be able to avoid them.

We cannot enter into alliance with neighbouring princes until we are acquainted with their designs. We are not fit to lead an army on the march unless we are familiar with the face of the country - its mountains and forests, its pitfalls and precipices, its marshes and swamps. We shall be unable to turn natural advantages to account unless we make use of local guides.

Those who are victorious plan effectively and change decisively. They are like a great river that maintains its course but adjusts its flow.

The dance of battle is always played to the same impatient rhythm. What begins in a surge of violent motion is always reduced to the perfectly still.

The King is only fond of words, and cannot translate them into deeds.