The greatest, later than the divine unity, must be the Divine Mind, and it must be the second of all existence, for it is that which sees The One on which alone it leans while the First has no need whatever of it.
Plotinus defines Divine Mind (Nous) as the second hypostasis of all existence, generated necessarily from the All-Perfect One and oriented entirely toward contemplation of its source.
, The Six Enneads, 270thesis