The soul must be distinct from intellect because even at its best, what the soul does when it's thinking, is it thinks linguistically, it thinks in a temporarily extended way, so it for example, might go through the steps of an argument chain, as if you were going through a syllogism and seeing that something followed from the premises, whereas intellect simply grasps the forms.
Peter AdamsonUnlike later Neo-Platonists, Plotinus says that our souls are always connected to the universal intellect and that we never really fall away.
Peter AdamsonPlotinus thought that the entire world has a single soul. He also thought that each animal and plant and of course human, has an individual soul.
Peter Adamson