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.
Happiness is the only good. The time to be happy is now. The place to be happy is here. The way to be happy is to make others so.
In order to have great happiness you have to have great pain and unhappiness – otherwise how would you know when you’re happy?
Your successes and happiness are forgiven you only if you generously consent to share them.