Who can determine where one ends and the other begins?

The natural formation of the country is the soldier's best ally

Sweat more during peace: bleed less during war

Therefore the skillful leader subdues the enemy's troops without any fighting; he captures their cities without laying siege to them; he overthrows their kingdom without lengthy operations in the field.

If you know both yourself and your enemy, you can win a hundred battles without a single loss.

Thus, though I have heard of successful military operations that were clumsy but swift, cleverness has never been seen associated with long delays.

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