What I mean is that in some the end and the activity are the same, and there is not any other end beyond the activity; for instance, to the flute player the activity and end are the same (for to play the flute is both his end and his activity); but not to the art of housebuilding (for it has a different end beyond the activity); now friendship is a sort of activity, and there is not any other end beyond the act of loving, but just this.