Opportunities multiply as they are seized.

When the soldiers stand leaning on their spears, they are faint from want of food.

He who relies solely on warlike measures shall be exterminated; he who relies solely on peaceful measures shall perish.

The peak efficiency of knowledge and strategy is to make conflict unnecessary.

If we wish to fight, the enemy can be forced to an engagement even though he be sheltered behind a high rampart and a deep ditch. All we need do is attack some other place that he will be obliged to relieve.

Spies cannot be usefully employed without a certain intuitive sagacity.

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.