![Ennead II.6 [17]: On quality and form (or on substance and quality) — Plotinus](https://covers.openlibrary.org/b/id/414731-L.jpg)
Written work
Ennead II.6 [17]: On quality and form (or on substance and quality)
Περὶ ποιότητος καὶ εἴδους

It distinguishes between the qualities that complete the essence of a thing—the heat of fire—and accidental qualities, and explains both as activities of the forming principles (logoi) that proceed from the intelligible world.
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Authorship note
An authentic treatise by Plotinus, no. 17 in Porphyry's chronological order (Life of Plotinus 4–6), first period (treatises 1–21, written before Porphyry's arrival in 263). The title and the placement in Ennead II are Porphyry's.
Editions and translations
Editions in your language first, without hiding the others. Each with its cover and its store.
English

Plotinus II: Ennead II (Loeb Classical Library 441)
Harvard University Press, 1966
Translation: A. H. Armstrong
ISBN 9780674994867
Bilingüe griego-inglés.
Plotinus
Ennead II.6 (MacKenna)
The Conscious LibraryEnnead II.6 (MacKenna)
Medici Society; Wikisource, 1921
Translation: Stephen MacKenna
Dominio público (MacKenna murió en 1934).
Español

Porfirio, Vida de Plotino; Plotino, Enéadas I–II
Gredos (Biblioteca Clásica Gredos, 57), 1982
Translation: Jesús Igal
ISBN 9788424908607
Introducciones, traducción y notas.
Other works by Plotinus
- Enneads · 301
- Life of Plotinus (by Porphyry) · 301
- Ennead I.1 [53]: What is the living being, and what is man? · 268
- Ennead I.2 [19]: On virtues · 253
- Ennead I.3 [20]: On dialectic · 253
- Ennead I.4 [46]: On happiness (well-being) · 268
- Ennead I.5 [36]: Whether happiness increases with time · 263
- Ennead I.6 [1]: On beauty · 253
- Ennead I.7 [54]: On the primal good and the other goods · 268
- Ennead I.8 [51]: On what are and whence come evils · 268
- Ennead I.9 [16]: On going out of the body · 253
- Ennead II.1 [40]: On the cosmos (or on heaven) · 263
- Ennead II.2 [14]: On the movement of heaven · 253
- Ennead II.3 [52]: Whether the stars are causes · 268
- Ennead II.4 [12]: On matter (or on the two matters) · 253
- Ennead II.5 [25]: On what exists potentially and what actually · 263
- Ennead II.7 [37]: On complete transfusion · 263
- Ennead II.8 [35]: On sight, or how distant objects appear small · 263
- Ennead II.9 [33]: Against the Gnostics · 263
- Ennead III.1 [3]: On fate · 253
- Ennead III.2 [47]: On providence, I · 268
- Ennead III.3 [48]: On providence, II · 268
- Ennead III.4 [15]: On our allotted guardian spirit · 253
- Ennead III.5 [50]: On love · 268
- Ennead III.6 [26]: On the impassibility of the bodiless · 263
- Ennead III.7 [45]: On eternity and time · 263
- Ennead III.8 [30]: On nature, contemplation and the One · 263
- Ennead III.9 [13]: Various considerations · 253
- Ennead IV.1 [21]: On the essence of the soul, I · 253
- Ennead IV.2 [4]: On the essence of the soul, II · 253
- Ennead IV.3 [27]: Problems of the soul, I · 263
- Ennead IV.4 [28]: Problems of the soul, II · 263
- Ennead IV.5 [29]: Problems of the soul, III, or on sight · 263
- Ennead IV.6 [41]: On sense-perception and memory · 263
- Ennead IV.7 [2]: On the immortality of the soul · 253
- Ennead IV.8 [6]: On the descent of the soul into bodies · 253
- Ennead IV.9 [8]: Whether all souls are one · 253
- Ennead V.1 [10]: On the three primary hypostases · 253
- Ennead V.2 [11]: On the origin and order of the beings after the First · 253
- Ennead V.3 [49]: On the knowing hypostases and that which is beyond · 268
- Ennead V.4 [7]: How what comes after the First derives from the First, and on the One · 253
- Ennead V.5 [32]: That the intelligibles are not outside the Intellect, and on the Good · 263
- Ennead V.6 [24]: That what is beyond being does not think · 263
- Ennead V.7 [18]: Whether there are Forms of individuals · 253
- Ennead V.8 [31]: On the intelligible beauty · 263
- Ennead V.9 [5]: On Intellect, the Forms and Being · 253
- Ennead VI.1 [42]: On the kinds of being, I · 263
- Ennead VI.2 [43]: On the kinds of being, II · 263
- Ennead VI.3 [44]: On the kinds of being, III · 263
- Ennead VI.4 [22]: On the presence of being, one and the same, everywhere as a whole, I · 263
- Ennead VI.5 [23]: On the presence of being, one and the same, everywhere as a whole, II · 263
- Ennead VI.6 [34]: On numbers · 263
- Ennead VI.7 [38]: How the multitude of the Forms came into being, and on the Good · 263
- Ennead VI.8 [39]: On free will and the will of the One · 263
- Ennead VI.9 [9]: On the Good or the One · 253
- Notes of the lectures (by Amelius, lost) · 260
- Eustochius' edition (lost)
- Theology of Aristotle · 840
Sources
- Porfirio. Vida de Plotino y orden de sus libros (Περὶ τοῦ Πλωτίνου βίου καὶ τῆς τάξεως τῶν βιβλίων αὐτοῦ). Texto griego en la ed. de R. Volkmann (Teubner, 1883), en Wikisource en griego; trad. inglesa de Stephen MacKenna (1917), en Wikisource en inglés.
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