True happiness comes from the joy of deeds well done, the zest of creating things new.
Antoine de Saint-Exupery

The person born with a talent they are meant to use will find their greatest happiness in using it.
Johann Wolfgang von Goethe

Happiness exists on earth, and it is won through prudent exercise of reason, knowledge of the harmony of the universe, and constant practice of generosity.
Jose Marti

You know it's love when all you want is that person to be happy, even if you're not part of their happiness.
Julia Roberts

Happiness includes chiefly the idea of satisfaction after full honest effort. No one can possibly be satisfied and no one can be happy who feels that in some paramount affairs he failed to take up the challenge of life.
Arnold Bennett