Page "The Book of Five Rings" Paragraph 29

In regards to the gaze of someone, he notes that a person must be able to perceive that which is all around him without moving their eyeballs noticeably, which is said to be a skill which takes an enormous amount of practice to perfect.

He notes that this is again one of the most important parts of strategy, as well as being able to see things which are close to you, such as the technique of an enemy.

It is also used to perceive things far away, such as arriving troops or enemies, as that is the precursor to battle.

You can then change your actions according to what you see.