Who can determine where one ends and the other begins?

In your deliberations, when seeking to determine the military conditions, let them be made the basis of a comparison, in this wise: which of the two generals has the most ability? on which side is Discipline most rigorously enforced? which army is stronger? on which side are the officers and men more highly trained? in which army is there the greater constancy both in reward and punishment?

If you know yourself but not the enemy, for every victory gained you will also suffer a defeat.

These are six ways of courting defeat, which must be carefully noted by the general who has attained a responsible post.

The King is only fond of words, and cannot translate them into deeds.

Appraise war in terms of the fundamental factors. The first of these factors is moral influence.

When you are ignorant of the enemy but know yourself, your chances of winning or losing are equal.