It is also clear that it does not lie in the operation of art.
 For the knowledge that pertains to art is also practical knowledge. And so, it is ordered to an end, and is not itself the ultimate end.
 Again, the ends of art operations are artifacts. These cannot be the ultimate end of human life, for we ourselves are, rather, the ends for all artificial things. Indeed, they are all made for man’s use. Therefore, ultimate felicity cannot lie in the operation of art.
Next - CONTRA GENTILES - BOOK THREE: PROVIDENCE -Chapter 37 THAT THE ULTIMATE FELICITY OF MAN CONSISTS IN THE CONTEMPLATION OF GOD