There are three things to beware of through life: when a man is young, let him beware of his appetites; when he is middle-aged, of his passions; and when old, of covetousness, especially.

The man of wisdom is never of two minds; the man of benevolence never worries; the man of courage is never afraid.

To err and not reform, this may indeed be called error.

Real knowledge is to know the extent of one's ignorance.

It is goodness that gives to a neighborhood its beauty. One who is free to choose, yet does not prefer to dwell among the good - how can he be accorded the name of wise?

If I give a student one-fourth of what he should know, I expect him to get the other three-fourths himself, otherwise I do not want him as a student.

What the wise seek is in themselves