Do not consider anything for your interest which makes you break your word, quit your modesty or inclines you to any practice which will not bear the light or look the world in the face.

A man's true delight is to do the things he was made for.

Enter others' minds and let them enter yours.

Keep yourself simple, good, pure, serious, and unassuming; the friend of justice and godliness; kindly, affectionate, and resolute in your devotion to duty.

If you are pained by any external thing, it is not this that disturbs you, but your own judgment about it.

My city and state are Rome. But as a human being? The world. So for me, "good" can only mean what's good for both communities.

The happiness of your life depends upon the quality of your thoughts: therefore, guard accordingly, and take care that you entertain no notions unsuitable to virtue and reasonable nature.