Yin and yang, male and female, strong and weak, rigid and tender, heaven and earth, light and darkness, thunder and lightning, cold and warmth, good and evil...the interplay of opposite principles constitutes the universe.

What you dislike in your superiors, avoid doing to your inferiors. What you dislike in your inferiors, avoid doing when working for your superiors. What you hate in those who are in front of you, do not do to those behind you.

Rather than caring about whether or not you are known, strive to be worth knowing.

A youth is to be regarded with respect. How do we know that his future will not be equal to our present?

Shall I tell you what knowledge is? It is to know both what one knows and what one does not know.

A man may not transgress the bounds of major morals, but may make errors in minor morals.

There are cases in which the blade springs, but the plant does not go on to flower. There are cases where it flowers, but no fruit is subsequently produced.