Quote by Isoroku Yamamoto
"The mind is sharper than the sword when properly trained."
More from Isoroku Yamamoto
"I would rather be a man of value than a man of success."
"Man is not born for defeat. A man can be destroyed but not defeated."
"The real problem is in the hearts and minds of men. It is easier to denature plutonium than to denature the evil spirit of man."
"Success is not final, failure is not fatal: it is the courage to continue that counts."