Who said "If your enemy is secure at all points, be prepared for him."?

This quote is attributed to Sun Tzu.

If your enemy is secure at all points, be prepared for him. - Sun Tzu

"If your enemy is secure at all points, be prepared for him."

Sun Tzu War

Character in The Art of War

Buy "The Art of War" on Amazon

"All warfare is based on deception."

"Know yourself and know your enemy; in a hundred battles, you will never be defeated."

"The supreme art of war is to subdue the enemy without fighting."

"In the midst of chaos, there is also opportunity."

"Some battles are worth fighting."

"Sometimes you have to become the monster to stop the monsters."

"Skynet sent me back through time to kill you."

"War teaches us the value of peace."