To the courtiers flushed with wine, life was pleasure, and pleasure life.

The truth of the scholar, alone in his study, does not always accord with what the world at large considers to be true.

Danger was the grindstone on which the swordsman whetted his spirit. Enemies were teachers in disguise.

Not only must a warrior be strong with his bow, but he must have a heart full of pity for all living creatures.

Fighting isn't all there is to the Art of War. The men who think that way, and are satisfied to have food to eat and a place to sleep, are mere vagabonds. A serious student is much more concerned with training his mind and disciplining his spirit than with developing martial skills.

Enemies were teachers in disguise.

It is easy to crush an enemy outside oneself but impossible to defeat an enemy within.