If the enemy opens the door, you must race in.

Engage people with what they expect; it is what they are able to discern and confirms their projections. It settles them into predictable patterns of response, occupying their minds while you wait for the extraordinary moment - that which they cannot anticipate.

He will win who, prepared himself, waits to take the enemy unprepared.

Being unconquerable lies with yourself; being conquerable lies with your enemy.

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.

In peace prepare for war, in war prepare for peace. The art of war is of vital importance to the state. It is matter of life and death, a road either to safety or to ruin. Hence under no circumstances can it be neglected.

Making no mistakes is what establishes the certainty of victory, for it means conquering an enemy that is already defeated.