It is also a disease to be possessed by the idea of showing the results of your training.
It is a disease to be determined to attack first or, conversely, to wait for the opponent's move.
It is a disease even to be possessed by the idea of removing all such diseases.
The disease is a state of mind that is rigid and fixed, in whatever situation.
All such diseases stem from your state of mind.
It is important to control the mind.
—From Hei-Ho-Kaden-Sho by Yagyu Tajimanokami Munenori