It is not events that disturb the minds of men, but the view they take of them.

To live a life of virtue, match up your thoughts, words, and deeds.

In a word, neither death, nor exile, nor pain, nor anything of this kind is the real cause of our doing or not doing any action, but our inward opinions and principles.

If we are not stupid or insincere when we say that the good or ill of man lies within his own will, and that all beside is nothing to us, why are we still troubled?

What is learned without pleasure is forgotten without remorse.

If you think you control things that are in the control of others, you will lament. You will be disturbed and you will blame both gods and men.

Other people's views and troubles can be contagious. Don't sabotage yourself by unwittingly adopting negative, unproductive attitudes through your associations with others.