The One, The Intellect, and the Soul
The One, the Unmoved Moved, the Ultimate Cause, the Perfect Simplicity. The Intellect, the Intellection of Intelligibility, by which the forms and structures are known beyond and in the One. And finally, the Soul, the Soul being the Hole in which the One and the Intellect repeatedly finds themselves, instantiations, known by the way the Soul desires the Other.
So says Plotinus.