Appraise war in terms of the fundamental factors. The first of these factors is moral influence.
There are not more than five primary colours, yet in combination they produce more hues than can ever been seen.
Know the enemy and know yourself.
If ignorant both of your enemy and yourself, you are certain to be in peril.
Attack is the secret of defense; defense is the planning of an attack.
He will win who, prepared himself, waits to take the enemy unprepared.