Of all that Heaven produces and nourishes, there is none so great as man.

Knowledge is recognizing what you know and what you don't.

The father who does not teach his son his duties is equally guilty with the son who neglects them.

If a superior man abandon virtue, how can he fulfil the requirements of that name?

Virtuous people often revenge themselves for the constraints to which they submit by the boredom which they inspire.

Some are born with knowledge, some derive it from study, and some acquire it only after a painful realization of their ignorance. But the knowledge being possessed, it comes to the same thing. Some study with a natural ease, some from a desire for advantages, and some by strenuous effort. But the achievement being made, it comes to the same thing.

True goodness springs from a man's own heart. All men are born good.