He who is not contented with what he has, would not be contented with what he would like to have.

The friend must be like money, that before you need it, the value is known.

Ordinary people seem not to realize that those who really apply themselves in the right way to philosophy are directly and of their own accord preparing themselves for dying and death.

Thou shouldst eat to live; not live to eat.

The highest realms of thought are impossible to reach without first attaining an understanding of compassion.

Though flattery blossoms like friendship, yet there is a vast difference in the fruit.

Are not all things which have opposites generated out of their opposites?