He will win who knows when to fight and when not to fight.

Quickness is the essence of the war.
Victory is reserved for those who are willing to pay its price.
If a battle can not be won do not fight it.
Supreme excellence consists in breaking the enemy’s resistance without fighting.
Know your enemy and know yourself and you can fight a hundred battles without disaster.
If you know the enemy and know yourself you need not fear the results of a hundred battles.

The greatest victory is that which requires no battle.
Know thy self, know thy enemy. A thousand battles, a thousand victories.
To see victory only when it is within the ken of the common herd is not the acme of excellence.
If you are far from the enemy, make him believe you are near.
There has never been a protracted war from which a country has benefited.