1. That there are two kinds of occupations: eternal ones and temporal ones. To test a given occupation for category status, ask if the reality of the occupation is more or less important than the reality of the occupaiton of playing. For examople, the occupaiton of shopkeeping is less important than the occupation of playing, though the fact that one makes money by shopkeeping may be important enough that they do it instead of playing. Motherhood, on the other hand, is more important than playing.
2. Three reasons art must have limits:
A. The more the limits, the greater the achevement of the artist.
B. Without limits, an artist loses his creativity.
C. The more a work of art is a single thing, the better it is. And being a single thing also implies that there are a great many things that the work is not.