Nothing is so strong as gentleness.
Nothing is so gentle as real strength.
— Frances de Sales
Strategy of Lao Tzu, often used by the arts of Aikido, Judo and Jiu-Jitsu: “Ju Yoku Go O Seisu,” meaning “Gentleness Controls Strength.”
Samurai saying regarding developing skill in the combat arts: “Knife sharpens on stone, man sharpens on man.”