“When in a fight to the death, one wants to employ all one's weapons to the utmost. I must say that to die with one's sword still sheathed is most regrettable.”

“You must understand that there is more than one path to the top of the mountain”

“The primary thing when you take a sword in your hands is your intention to cut the enemy, whatever the means. Whenever you parry, hit, spring, strike or touch the enemy's cutting sword, you must cut the enemy in the same movement. It is essential to attain this. If you think only of hitting, springing, striking or touching the enemy, you will not be able actually to cut him.”

“Polish your wisdom: learn public justice, distinguish between good and evil, study the ways of different arts one by one.”

“from one thing, know ten thousand things”

“To know ten thousand things, know one well”

“It is difficult to understand the universe if you only study one planet”