The Primary Agent is still, without any sort of movement at all. Its stillness produces its image, which is the intellect; but not in a thing, for its image is a vessel, noble and powerful, superior in nobility and power to all lower vessels.
In that image are all science and knowledge, because when it emanated from the Primary Agent, it focused on its cause, and beheld it according to its power and thus became intellect and essence.
This essence is the intellect. So it was primary in its relation to what is subordinate to it, and secondary in relation to what is above it.