. . " (6) there are the arts whichfurnish gold, silver, wood, bark, and other materials, which should havebeen put first; these, again, have no concern with the kingly science; anymore than the arts (7) which provide food and nourishment for the humanbody, and which furnish occupation to the husbandman, huntsman, doctor,cook, and the like, but not to the king or statesman." . . .