To be able to practice five things everywhere under heaven constitutes perfect virtue: gravity, generosity of soul, sincerity, earnestness, and kindness.

Things that are done, it is needless to speak about. Things that are past, it is needless to blame.

To go beyond is as wrong as to fall short.

There are three things which the superior man guards against. In youth, lust. When he is strong, quarrelsomeness. When he is old, covetousness.