For they are not shared in incidentally, but a thing must share in its Form as in something not predicated of a subject (by 'being shared in incidentally' I mean that e.g. if a thing shares in 'double itself', it shares also in 'eternal', but incidentally;
(Esan nahi dut, adibidez, zerbaitek Bikoitza Bere Baitan den horretan parte hartzen badu, Betiereko den horretan ere parte hartzen duela, baina akzidentalki, akzidentalki baita Bikoitza Betierekoa) Beraz, Formak substantzia izango dira;