(C) When we exercise intellection upon ourselves, we are, obviously, observing an INTELLECTIVE NATURE, for otherwise we would not be able to have that intellection. Enneads III,9,3
Thus its substantial existence comes from the Intellectual-Principle; and the Reason within it becomes Act in virtue of its contemplation of that prior; for its thought and act are its own intimate possession when it looks to the Supreme Intelligence; those only are soul-acts which are of this INTELLECTIVE NATURE and are determined by its own character; all that is less noble is foreign (traceable to Matter) and is accidental to the soul in the course of its peculiar task. Enneads V,1,3
Given the Reason-Principle (the outgoing divine Idea) of a certain living thing and the Matter to harbour this seed-principle, the living thing must come into being: in the same way once there exists – an intellective Nature, all powerful, and with nothing to check it – since nothing intervenes between it and that which is of a nature to receive it – inevitably the higher imprints form and the lower accepts, it. The recipient holds the Idea in division, here man, there sun, while in the giver all remains in unity. Enneads V,9,9