“It is because a mirror has no commitment to any image that it can clearly and accurately reflect any image before it.  The mind of a warrior is like a mirror in that it has no commitment to any outcome and is free to let form and purpose result on the spot, according to the situation.”

Yagyu Munenori (1571-1646) founder of Yagyu Shinkage-ryu style of swordsmanship. The Way of the Living Sword.  Trans. D.E Tarver