IF THE GOOD BE A GENUS, IT MUST BE ONE OF THE POSTERIOR ONES.
If you insist that the Good must be genus, we will grant it, as a posterior genus; for it will be posterior to being. Now the existence of (the Aristotelian) "essence,"[321] although it be always united to Essence, is the Good itself; while the primary genera belong to Essence for its own sake, and form "being." Hence we start to rise up to the absolute Good, which is superior to Essence; for it is impossible for essence and "being" not to be manifold; essence necessarily includes the above-enumerated primary genera; it is the manifold unity.