For the arts of making have some other end beyond the making; for instance, beyond housebuilding, since that is the art of making a house, there is a house as its end beyond the making, and similarly in the case of carpentry and the other arts of making; but in the processes of doing there is no other end beyond the doing; for instance, beyond playing the harp there is no other end, but just this is the end, the activity and the doing.