Envying another man's happiness is madness; you wouldn't know what to do with it if you had it.
Andre Gide
Man never thinks himself happy, but when he enjoys those things which others want or desire.
Alexander Pope
The worst part of success is trying to find someone who is happy for you.
Bette Midler
Hatred is active, and envy passive dislike; there is but one step from envy to hate.
Johann Wolfgang von Goethe
We so skillfully hide our pain that many people are jealous of our happiness.
No author
Few men have the natural strength to honor a friend's success without envy.
Aeschylus