To refrain from intercepting 391 an enemy whose banners are in perfect order, to refrain from attacking an army drawn up in calm and confident array: 392 ⁠—this is the art of studying circumstances. 393

It is a military axiom not to advance uphill against the enemy, nor to oppose him when he comes downhill. 394

Do not pursue an enemy who simulates flight; do not attack soldiers whose temper is keen.

Do not swallow bait offered by the enemy. 395 Do not interfere with an army that is returning home. 396