   In the Long Commentary, Averroes retains the separate, i.e., immaterial yet substantial nature of the material and Agent intellects, and their relation of potential to actual intelligibility. However, he treats them as two separate substances, not two aspects of the same intelligence. The material intellect is thus hypostatized, treated as a “fourth kind of being,” the celestial principle of matter qua potentiality that, together with the formal principle represented by the Agent Intellect, explains the nature and activity of intelligible forms; even as sensible objects are constituted by similar hylomorphic  principles.[70]