Ancient masters of excellence had a subtle essence, and a depth too profound to comprehend.
There is no greater mistake than to make light of an enemy By making light of an enemy many a kingdom has been lost.
Man's enemies are not demons, but human beings like himself.
Mastering others is strength. Mastering oneself makes you fearless.
Meet the difficult while it is easy.
To attain knowledge, add things every day To attain wisdom, remove things every day