Any intelligence, in the act by which it conceives what the essence of a thing is, experiences a semantic experience, an experience of meaning or the intelligible, failing which it cannot form a concept of it. The concept cannot be abstracted purely and simply from the thing; it must first and foremost make sense, constitute an intelligible unity, and be recognized by the intelligence because it makes sense within it. There is no other “criterion of truth” than this re-cognition, this acquiescence of the intelligence, its experience of agreement with its own intellectual nature (Borella).

See the paper Reason and Intelligence, the Two Sides of the Mind.