See first with your mind, then with your eyes, and finally with your body. - Yagyū Munenori

It is easy to kill someone with a slash of a sword. It is hard to be impossible for others to cut down.

When you strike a blow, do not let your mind dally on it, not concerning yourself with whether or not it is a telling blow; you should strike again and again, over and over, even four or five times. The thing is not to let your opponent even raise his head.

Throwing down your own sword is also an art of war. If you have attained mastery of swordlessness, you will never lack for a sword. The opponent's sword is your sword. This is acting at the vanguard of the moment.