The Yi sunshin ways
Three ways, four obligations, five skills, and ten keys to security.
"The three roads are knowledge of the world; understanding of things as they are; and wisdom toward humanity.
The four obligations are to provide national security with minimal cost; to lead others unselfishly; to suffer adversity without fear; to offer solutions without laying blame.
The five skills are to be flexible without weakness; to be strong without arrogance; to be kind without vulnerability; to be trusting without naiveté; and to have invincible courage.
The ten keys to security are purity of purpose, sound strategy, integrity, clarity, lack of covetousness, lack of addiction, a reserved tongue, assertiveness without aggression, being firm and fair, and patience."
He believed in three essentials for the warrior: humility, discernment, and courage. He embodied all of them, and lived with integrity throughout his life. When Admiral Son Ko-i died in 1598, a letter was found among his possessions. It was from Yi Sun-shin, and in it he wrote, "My life is simple, my food is plain, and my quarters are uncluttered. In all things, I have sought clarity. I face the troubles and problems of life and death willingly. Virtue, integrity and courage are my priorities. I can be approached, but never pushed; befriended but never coerced; killed but never shamed."