 Music and that which excites laughter are two different kinds of play with aesthetical ideas, or of representations of the understanding through which ultimately nothing is thought, which can give lively gratification merely by their changes. Thus we recognize pretty clearly that the animation in both cases is merely bodily, although it is excited by ideas of the mind; and that the feeling of health produced by a motion of the intestines corresponding to the play in question makes up that whole gratification of a gay party.