Clearly, if this is allowed, the whole argument cf. the chapter is allowed. Reference is made to Chap. LXVIII, where we read: "Above other forms there is found a form, likened to the supramundane substances in point of understanding, and competent to an activity which is accomplished without any bodily organ at all; and this is the intellectua soul: for the act of understanding is not done through any bodily organ."
Of God and His Creatures: 2.79