"A man without a teacher is like a blind man without a guide."

"The way to become a gentleman is like refining gold - the more you forge it, the purer it becomes."

"To be good at learning is to follow the Way; to be good at doing is to practice the Way."

"The gentleman understands what is moral. The petty man understands what is profitable."

"The sage is one who knows what to do and what not to do."