Plotinos: Complete Works, v. 1 In Chronological Order,...

7. Within the soul the virtues have the same interconnection obtaining within Intelligence between the types superior to virtue. For Intelligence, it is thought that constitutes wisdom and prudence; conversion towards oneself is temperance; the fulfillment of one's proper function is justice, and the intelligence's perseverance in remaining within itself, in maintaining itself pure and separated from matter, is analogous to courage. To contemplate intelligence will therefore, for the soul, constitute wisdom and prudence, which then become virtues, and no longer remain mere intellectual types. For the soul is not identical with the essences she thinks, as is intelligence. Similarly, the other soul-virtues will correspond to the superior types. It is not otherwise with purification, for since every virtue is a purification, virtue exacts preliminary purification; otherwise, it would not be perfect.