"Humble words and increased preparations are signs that the enemy is about to advance. Violent language and driving forward as if to the attack are signs that he will retreat."

"Appear weak when you are strong, and strong when you are weak."

"Opportunities multiply as they are seized."

"The greatest victory is that which requires no battle."

"All warfare is based on deception."

"If you know the enemy and know yourself, you need not fear the result of a hundred battles."