All is fair in love and war
Attack is the secret of defense; defense is the planning of an attack.
If words of command are not clear and distinct, if orders are not thoroughly understood, then the general is to blame. But, if orders are clear and the soldiers nevertheless disobey, then it is the fault of their oficers.
One mark of a great soldier is that he fight on his own terms or fights not at all.
There are not more than five musical notes, yet the combinations of these five give rise to more melodies than can ever be heard. There are not more than five primary colours, yet in combination they produce more hues than can ever been seen. There are not more than five cardinal tastes, yet combinations of them yield more flavours than can ever be tasted.
When your army has crossed the border, you should burn your boats and bridges, in order to make it clear to everybody that you have no hankering after home.
Do not repeat the tactics which have gained you one victory, but let your methods be regulated by the infinite variety of circumstances.
In battle, there are not more than two methods of attack–the direct and the indirect; yet these two in combination give rise to an endless series of maneuvers.
So in war, the way is to avoid what is strong, and strike at what is weak.
To know your Enemy, you must become your Enemy.
Hiding order beneath the cloak of disorder is simply a question of subdivision; concealing courage under a show of timidity presupposes a fund of latent energy; masking strength with weakness is to be effected by tactical dispositions.
Knowing the enemy enables you to take the offensive, knowing yourself enables you to stand on the defensive.