 The essence in the image thus illuminated, but neither really separated from the image nor transferred anywhere, triggers the act of intellection of the possible intellect—the passive power of the intellectual faculty. This power is passive precisely in the sense that it cannot trigger its own operation; rather, this operation must be caused in it by the essence of the thing with the assistance of the agent intellect (QDA-1974-III: 122). Finally, the act of intellection comes about when, thanks to the action of the agent intellect, the actually intelligible essence in the image is actually understood by the possible intellect, thus causing the formation of the essence’s concept in the soul.