Never contract friendship with a man that is not better than thyself.

The virtuous will be sure to speak uprightly; but those whose speech is upright may not be virtuous.

Time flows away like the water in the river.

To practice five things under all circumstances constitutes perfect virtue; these five are gravity, generosity of soul, sincerity, earnestness, and kindness.

The beginning of wisdom is to call things by their proper name.

First and foremost, be faithful to your superiors, keep all promises, refuse the friendship of all who are not like you; and if you have made a mistake, do not be afraid of admitting the fact and amending your ways.

You must find time for reading, or surrender yourself to self-chosen ignorance.