You and your opponent are one. There is a coexisting relationship between you. You coexist with your opponent and become his complement, absorbing his attack and using his force to overcome him.

Never waste energy on worries or negative thoughts, all problems are brought into existence -drop them.

A powerful athlete is not a strong athlete, but one who can exert his strength quickly. Since power equals force times speed, if the athlete learns to make faster movements he increases his power, even though the contractile pulling strength of his muscles remains unchanged. Thus, a smaller man who can swing faster may hit as hard or as far as the heavier man who swings slowly.

Instead of dedicating your life to actualize a concept of what you should be like, actualize yourself.

Zen is not “attained” by mirror-wiping mediation, but by “self-forgetfulness in the existential 'present' of life here and now.” We do not “come”, we “are.” Don't strive to become, but be.

The athlete who is building muscles though weight training should be very sure to work adequately on speed and flexibility at the same time. In combat, without the prior attributes, a strong man will be like the bull with its colossal strength futilely pursuing the matador or like a low-geared truck chasing a rabbit.

The measure of the moral worth of a man is his happiness. The better the man, the more happiness. Happiness is the synonym of well-being