Joy, Peace and Quiet are all shades of happiness and gratitude. Bruce Di Marsico said it beautifully in The Myth of Unhappiness, Vol. 3. "Joy is the active bodily attitude of happiness. It is being not done with what you are doing, for now; being engaged in a motion. Peace is the inactive bodily attitude of happiness. It is being done for now, having completed a motion, resting in the satisfaction of completeness. Quiet is the knowing that nothing ever needs be done. Quiet can be known in the midst of a riot, or not known sitting in meditation."