You know, that's what I've regretted the most, that joy. Of course, later there were times when I felt happy, but happiness is to joy what an electric light bulb is to the sun. Happiness always has an object, you're happy because of something, it's a condition whose existence depends on external things. Joy, on the other hand, has no object. It seizes you for no apparent reason; it's like the sun- its burning is fueled by its own heart.