Plan for what is difficult while it is easy, do what is great while it is small. The difficult things in this world must be done while they are easy, the greatest things in the world must be done while they are still small. For this reason sages never do what is great, and this is why they achieve greatness.

To know your Enemy, you must become your Enemy.

What is of supreme importance in war is to attack the enemy's strategy.

There are routes not to be followed, armies not to be attacked, citadels not to be besieged, territory not to be fought over.

The Art of War is self-explanatory

When he pretends to flee, do not pursue.

He who knows his enemy and himself well will not be defeated easily.