Whether the intellectual soul knows itself by its essence?

❌ Objection 1 : It would seem that the intellectual soul knows itself by its own essence. For Augustine says (De Trin. ix, 3), that "the mind knows itself, because it is incorporeal."

❌ Objection 2 : Further, both angels and human souls belong to the genus of intellectual substance. But an angel understands itself by its own essence. Therefore likewise does the human soul.

❌ Objection 3 : Further, "in things void of matter, the intellect and that which is understood are the same" (De Anima iii, 4). But the human mind is void of matter, not being the act of a body as stated above (Question [76], Article [1]). Therefore the intellect and its object are the same in the human mind; and therefore the human mind understands itself by its own essence.