Miyamoto Musashi is known as the greatest Japanese samurai that ever lived (1584 -1645).
Do not think dishonestly.
Become acquainted with every art.
Know the Way of all professions
Distinguish between gain and loss in worldly matters.
Develop intuitive judgement and understanding for everything.
Perceive those things which cannot be seen.
Pay attention even to trifles.
Do nothing which is of no use.
Accept everything just the way it is.
Do not seek pleasure for its own sake.
Do not, under any circumstances, depend on a partial feeling.
Think lightly of yourself and deeply of the world.
Be detached from desire your whole life long.
Do not regret what you have done.
Never be jealous.
Never let yourself be saddened by a separation.
Resentment and complaint are appropriate neither for oneself nor others.
Do not let yourself be guided by the feeling of lust or love.
In all things have no preferences.
Be indifferent to where you live.
Do not pursue the taste of good food.
Do not hold on to possessions you no longer need.
Do not act following customary beliefs.
Do not collect weapons or practice with weapons beyond what is useful.
Do not fear death.
Do not seek to possess either goods or fiefs for your old age.
Respect Buddha and the gods without counting on their help.
You may abandon your own body but you must preserve your honour.
Never stray from the way.
I don't know what that has to do with anything lol but it makes more sense in my monkey brain to me than the Parrots spouting specs weights and measures and the angle of the dangle...knowing any of that has never helped me do one thing with a blade.
Just a opinion