No man is happy without a delusion of some kind. Delusions are as necessary to our happiness as realities. – Christian Nestell Bovee

To attain happiness in another world we need only to believe something, while to secure it in this world we must do something. – Charlotte Perkins Gilman

There is only one way to happiness and that is to cease worrying about things which are beyond the power of our will. – Epictetus