1. Of the Ten Aristotelian Categories (0:00:00)

2. The Categories of Plotinos (2:17:46)

3. Plotinos's Own Sense-Categories (4:09:17)

4. The One Identical Essence is Everywhere Entirely Present (6:24:30)

5. The One Identical Essence is Everywhere Entirely Present (7:39:26)

Translated by Kenneth Sylvan Guthrie. Photograph: A Study by Henry Peach Robinson, 1858. Digital image courtesy of the Getty's Open Content Program. Recording and cover design by Geoffrey Edwards are in the public domain.