Joy seems to me a step beyond happiness- happiness is a sort of atmosphere you can live in sometimes when you're lucky. Joy is a light that fills you with hope and faith and love.
So long as we love we serve; so long as we are loved by others, I would almost say that we are indispensable; and no man is useless while he has a friend.
Love is our most unifying and empowering common spiritual denominator. The more we ignore its potential to bring greater balance and deeper meaning to human existence, the more likely we are to continue to define history as one long inglorious record of man’s inhumanity to man.