The general who wins the battle makes many calculations in his temple before the battle is fought. The general who loses makes but few calculations beforehand.
If fighting is sure to result in victory, than you must fight, even though the ruler forbid it; if fighting will not result in victory, then you must not fight even at the ruler's bidding.
Build your opponent a golden bridge to retreat across.
It is the rule in war, if our forces are ten to the enemy's one, to surround him; if five to one, to attack him; if twice as numerous, to divide our army into two.
The principle on which to manage an army is to set up one standard of courage which all must reach.
Some people think insufficiency means weakness and surplus means strength, but this impression is wrong.