天使是人類與上帝間的仲介，可天使理智的運作方式與天使知識並沒有受到足夠的考察。由於天使不具有質料，因此天使理智通過對自身的內在直觀而獲得知識，同時天使的知識不假外求而具有內在性特徵。面對著天使理智的神─人張力，阿奎那通過定位天使理智運作的種相化特徵以及理智「超性的自然欲求」澄清了理智完滿性中理解與存在的同一性，並且在本體論上劃清了受造與非受造的邊界。這種直觀性、內在性的理智概念構成多瑪斯主義極具特色的 認識論理解。

Angels serve as intermediaries between humanity and God, yet the operation of angelic intellect and the nature of angelic knowledge have received insufficient scholarly attention. Because angels lack matter, angelic intellect acquires knowledge through internal intuition of itself, and angelic knowledge is characterized by its interiority, requiring no external input. Confronting the divine-human tension inherent in angelic intellect, Aquinas clarifies the identity of understanding and being in the perfection of intellect by positioning the specificational character of angelic intellect's operation and the intellect's "supernatural natural desire," thereby establishing an ontological boundary between the created and the uncreated. This intuitive and interior conception of intellect constitutes a distinctively characteristic epistemological framework within Thomism.