Really skilful people never get out of time, and are always deliberate, and never appear busy. From this example, the principle can be seen. - Miyamoto Musashi

Strategy is the craft of the warrior. Commanders must enact the craft, and troopers should know this Way. There is no warrior in the world today who really understands the Way of strategy. There are various Ways. There is the Way of salvation by the law of Buddha, the Way of Confucius governing the Way of learning, the Way of healing as a doctor, as a poet teaching the Way of Waka, tea, archery, and many arts and skills. Each man practices as he feels inclined.

Perceive that which cannot be seen with the eye.

By knowing what exist, you can know that which does not exist. That is the void. People in this world look at things mistakenly, and think that what they do not understand must be the void. This is not the true void. It is confusion.