Who keeps the old akindle and adds new knowledge is fitted to be a teacher.

Clever talk can confound the workings of virtue, just as small impatiences can confound great projects.

To take what you know for what you know, and what you do not know for what you do not know, that is knowledge indeed.

The superior man, when resting in safety, does not forget that danger may come.

I am not bothered by the fact that I am not understood. I am bothered when I do not know others.

Everyone calls his son his son, whether he has talents or has not talents.

There has never been a man mean and at the same time virtuous.