Love is the condition in which the happiness of another person is essential to your own.
Robert Heinlein
We tend to forget that happiness doesn't come as a result of getting something we don't have, but rather of recognizing and appreciating what we do have.
Frederick Keonig
Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
Herman Cain
Happiness is a butterfly, which when pursued, is always just beyond your grasp, but which, if you will sit down quietly, may alight upon you
Nathaniel Hawthorne
The secret of happiness is not in doing what one likes, but in liking what one does.
James Matthew Barrie
The greatest happiness of the greatest number is the foundation of morals and legislation
Jeremy Bentham
We know the presence of each passing moment by its activity, but the power and eternity of the moment can only be realized through our choosing to be consciously passive to that presence.
Guy Finley