It is difficulties that show what men are.
The essence of philosophy is that a man should so live that his happiness shall depend as little as possible on external things.
Happiness and personal fulfillment are the natural consequences of doing the right thing.
To live a life of virtue, match up your thoughts, words, and deeds.
Not things, but opinions about things, trouble men.
In order to please others, we loose our hold on our life's purpose.