There is not a man who does not get senile by the time he reaches sixty. And when one thinks that he will not be senile, he is already so. - Yamamoto Tsunetomo

Sincerity does not only complete the self; it is the means by which all things are completed. As the self is completed, there is human-heartedness; as things are completed, there is wisdom. This is the virtue of one’s character, and the Way of joining the internal and external. Thus, when we use this, everything is correct.

Although this may be a most difficult thing, if one will do it, it can be done. There is nothing that one should suppose cannot be done.

Even if it seems certain that you will lose, retaliate. Neither wisdom nor technique has a place in this. A real man does not think of victory or defeat. He plunges recklessly towards an irrational death. By doing this, you will awaken from your dreams.