The Cambridge history of philosophy in late antiquity

From Plato To Platonism

Plotinus

Plotinus ENNEAD V.5 : That the Intelligibles are not External to the Intellect, and on the Good

Ancient Epistemology

The Cambridge companion to Plotinus

Platonism and Naturalism

The Cambridge history of philosophy in late antiquity

Ancient epistemology

Aristotle And Other Platonists

Knowing Persons