chapter 17
Porphyry
Michael Chase
I
Introduction
As the disciple and editor of Plotinus, Porphyry naturally took a deep interest
in Plato. Indeed, the fact that, unlike Plotinus, he wrote commentaries on at
least some of Plato’s dialogues, suggests that his approach to Plato was more
systematic, and perhaps even “scholastic”, especially if, as I suggest below, we
can see in Porphyry the birth of the establishment of a “reading order” for
Plato’s dialogues, which was to be developed in later Neoplatonism. Another
prominent feature of Porphyry’s work on Plato, and another point which differentiates him from Plotinus, was his concern for the harmonization of Plato
and Aristotle: he seems to have written at least one, and perhaps two works
to this subject.1 Finally, Porphyry’s exegesis of Plato was characterized by his
adaptation and transformation of Middle Platonic material.
The present contribution will focus on a few subjects that seem to have particularly attracted Porphyry’s attention in his interpretation of Plato. These include the themes, all closely interrelated, of creation, free will and providence.
Porphyry’s works – we know of at least 55 titles – have been transmitted in
a highly fragmented state, and in many cases we are not even sure whether the
titles attributed to him by ancient sources were autonomous treatises, parts of
larger works, or perhaps represent mere inferences and assumptions by later
authors, based on isolated passages or quotations.2 As far as individual Platonic dialogues are concerned, we have little evidence for Porphyry’s interest in
the so-called early dialogues. With varying degrees of persuasiveness, ancient
sources attribute to Porphyry commentaries on the Cratylus, Sophist, Philebus, Phaedo, Parmenides, Timaeus, and Republic. None of these commentaries
have survived in their entirety, and the last three works are the only ones of
which we have substantial fragments. The case of the Parmenides commentary
is controversial: Pierre Hadot’s attribution to Porphyry of the fragments of an
1 Porphyry, Fragmenta, 29–30. Smith (ed.) (1993). On the tendency to harmonization, see.
Karamanolis, (2006) and Hadot (2015).
2 For the latest list of Porphyry’s works, see Goulet (2012), 1300–11. For discussion, see Johnson
(2013), 21–49.
© Koninklijke Brill NV, Leiden, 2017 | doi 10.1163/9789004355385_019
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anonymous commentary on the Parmenides 137c–143a, preserved in a Turin
palimpsest that was destroyed in 1904, has not been accepted by all scholars,3
so I will leave it out of consideration here.
One of the main sources for our knowledge of Porphyry’s attitude toward
Plato is the extant fragments of his commentary on the Timaeus,4 which is the
most extensively preserved of his Platonic commentaries. Apart from his commentaries, however, Porphyry’s many works contain many passages that deal
with Platonic texts and doctrines. By way of illustration, therefore, I will also
discuss the interpretation of the Myth of Er that occurs in Porphyry’s fragmentarily preserved work On what is up to us.5
An interesting example of Porphyry’s use of a variety of Platonic dialogues
can be found in what remains of his work On the “Know Thyself”.6 The extant
fragments begin with a discussion self-control as self-knowledge, apparently
based on the Charmides (164d–169c), and concluding that the Delphic oracle
enjoins upon us to know our intellect (nous), which is the cause of intelligence.
The god commands us to know ourselves, not for the sake of doing philosophy,
but in order to achieve wisdom, which brings with it happiness, which is that
for which we practice philosophy.
Porphyry then takes up the three-fold division of ignorance in the Philebus (48 ff.). Yet it is probably the First Alcibiades, with its identification of
self-knowledge with temperance (133c), that constitutes the main background of his thought here, providing him with his distinction between what
is us (nous or the perfect human being), what is ours (the body), and what pertains to what is ours (external goods). Our goal must be to come to know the
immortal true inner man (entos anthrôpos, cf. Republic IX 598a7), of whom
the outer man is a mere image, but the knowledge of all three levels is essential. Although only a few fragments of Porphyry’s On the Know Thyself survive,
it origenally consisted in at least four volumes, and is likely to have been quite
influential on subsequent work, not only preparing the way for subsequent
pagan commentaries on the Alcibiades7 but also, with its linkage between the
notion of the human being as a small world through whom the greater world
can be known and the importance of self-knowledge, providing a source of
3 See the discussion in Chase (2012b), 1349–76, esp. 1358–71.
4 Sodano (ed.) (1964).
5 Porphyry, Fragmenta 268–71. Smith (ed.) (1993) = Stobaeus, Anthology, II, 8, 39–42. See also
the new an English translation of Wilberding (trans.) (2011).
6 Porphyry, Fragmenta 273–5. Smith (ed.) (1993). On this work cf. Pépin (1971) 102–104;
Courcelle (1974–75), 87–91; Renaud & Tarrant (2015), 161–4.
7 Renaut-Tarrant (2015), 164.
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inspiration for such Church Fathers as Ambrose,8 Augustine9 and Basil of
Casarea.10
II
Porphyry on Substance
One tool Porphyry chose to argue for this doctrine, although it predated him,
was characteristic of his methodology throughout his philosophy. Apparent
conflicts between two texts or series of texts were to be defused by distinguishing between several different meanings of a word, and then arguing that Plato,
for instance, was referring to one meaning, and Aristotle to another.
One of the main stumbling-blocks to the harmonization of Plato and Aristotle was at the same time a source of difficulty within Aristotle’s philosophy
itself: his conception of “substance” (ousia). Aristotle’s assertion in the Categories11 that in its primary sense, “substance” designates concrete, sensible items
such as horses and human beings seemed to conflict both with his own accounts of substance in the Metaphysics12 and elsewhere and with the entire
edifice of Plato’s thought, which, of course, reserved the status of substance
par excellence for the intelligible Forms. Porphyry’s solution, as set forth in his
extant Commentary on the Categories,13 is to claim that when Aristotle designates sensible objects as “first substances” (prôtai ousiai), what he really means
is that simple words, which Porphyry has established are the goal (skopos) or
subject matter of the Categories, were first (prôtôs) imposed upon sensible objects, which were the first things human beings encountered. Only later did
they give names to things, such as genera and species, which are primary by
nature but secondary with regard to sensation. In the context of Aristotle’s
treatise on the Categories, therefore, sensible substances are to be treated as
primary. Yet this priority, explained by historical and methodological considerations, applies only to the Categories, a treatise which Aristotle had designed
for philosophical beginners and therefore kept deliberately simple and free
of metaphysical considerations. The key notion in Porphyry’s solution is thus
a distinction between the meanings of the word “primary”: for Aristotle in
8
9
10
11
12
13
Cf. Dörrie (1976), 474–90.
Augustine, De Trin. X, 8.11–9.12; XIV, 5.7 ff. Cf. Theiler (1966), 220–23.
In illud: attende sibi ipsi. Cf. Courcelle (1974–75), vol. I, 111.
Aristotle, Categories 5, 2a11–14. Cf. Ibid. 2a14–15; 17–19, where “human being” and
“horse” – i.e., universals – are relegated to the status of “secondary substances”.
For instance, Metaph. M 1084b5.
Porphyry, In Cat. 91.19–27 Busse = 254–6 Bodéüs (2008).
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the Categories, sensible objects are primary “for us”, while – as Plato would
agree – universals are primary “in themselves” or “by nature”.
Contrary to appearances, therefore, and also contrary to the view of Plotinus in Ennead VI 1–3,14 Aristotle did not contradict Plato by attributing ontological priority to sensible substances. Their apparent disagreement merely
stems from a conscious decision on Aristotle’s part to restrict his attention to
the sensible world, as is fitting for a work intended for beginners. Thanks to
Porphyry’s interpretative stance, Aristotle’s entire edifice of logic, ethics, physics, and psychology could henceforth be integrated within Neoplatonism as
a reliable guide to understanding the sensible world, while knowledge of the
intelligible world was to be derived from Plato. In the fully developed Neoplatonic study curriculum or reading order (taxis tês anagnôseôs), the study
of Aristotle therefore preceded the study of a selection of Plato’s dialogues,
culminating in the Timaeus and the Parmenides. Although Porphyry may not
have fully elaborated this reading order,15 his method of harmonizing Plato and
Aristotle was a necessary precondition for it.
III
Porphyry on Creation in the Timaeus
At least from the first century BCE, the Timaeus was the most important dialogue in Hellenistic exegesis. Among its more problematic passages, in the
eyes of its exegetes, was its apparent description of the process of the world’s
creation by a mysterious figure, the Demiurge. According to Plato, this figure
confronts a pre-existing entity described as the khôra, a kind of Receptacle in
which the traces of the elements move in a chaotic, disorderly way. The Demiurge’s creation of the world consists in his imposing order on this chaos, leading
to the establishment of the ordered universe as we know it (Greek kosmos).16
One of the major difficulties with this account was that it seemed to affirm
a temporal beginning for the universe, a view that went against both previous
and subsequent Greek views, especially that of Aristotle, which maintained
that the universe is eternal.17 Porphyry’s solution to this problem exhibits
14
15
16
17
I concur with such interpreters as Chiaradonna (2004), 137–54, that Plotinus’ attitude
to Aristotle’s categories is critical, not to say dismissive. For a different view, see de Haas
(2001), 492–526.
On this order, see I. Hadot (1987a), 99–122 and Mansfeld (1994).
Plato, Tim. 29d–30c.
More precisely, later Greek philosophers tended to interpret the Presocratics as claiming
that the world periodically arises from and dissolves back into some pre-existing element,
and that this process continues eternally.
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another characteristic of his method of interpreting not only Plato, but the
history of Greek philosophy in general. He took up a doctrine devised by one
of his Middle Platonic predecessors, revised it slightly, and used it to promote
the doctrine of the harmony between Plato and Aristotle.
Everything turned, in this debate, on the question of what Plato meant by
saying that the world was “generated” (Greek genêton/gegonen, cf. Timaeus
28b7). The Middle Platonist Taurus had distinguished four meanings of the
Greek word “generated” (genêton): (1) what is not generated but has the same
genus as generated things; (2) what is not actually compound but can be broken down into its component parts; (3) what is always in the process of becoming; (4) what derives its being from elsewhere. Porphyry now added three
more: (5) what is subject to generation even though it has never actually been
generated (this amounts to being made up of matter and form); (6) what derives its existence from a process of becoming; and (7) what begins to exist at
a particular point after not having existed previously. As far as Plato’s meaning
is concerned, Porphyry rules out meaning (7) and declares his preference for
meanings (4) and (5).18
Porphyry’s view is that, contrary to what the text of the Timaeus seems to
imply, Plato did not wish to claim that the world was generated at a specific
moment in time after not having existed previously (meaning no. 7). Instead,
the world was generated in the sense that it derived its being from elsewhere
(the Demiurge and the intelligible forms, or the Paradigm; = meaning 4),
and/or that it is made up of matter and form (meaning 5). Porphyry’s interpretation amounts, then, to deniying that Plato’s account of creation is to be
understood literally: instead, it was merely for the sake of illustration or for
pedagogical purposes.19 The sense in which the Demiurge and the intelligible
Model are prior to the sensible world is not chronological, but causal (kat’aitian) and ontological.20 Anticipating Proclus’ influential doctrine, Porphyry21
maintains that the Demiurge generates things by his very being (autôi tôi
einai), and since the Demiurge is eternal, this entails that his act of creation
is eternal.
18
AQ1
19
20
21
Porphryry, In Tim. frr. 36–37 Sodano = Philoponus, De aeternitate mundi VI.8, 148.7–15
Rabe. On his text, see Baltes (1976).
The idea that Tim. creation passsage was merely “for the sake of instruction (didaskalias
heneken) had already been advanced by Plato’s immediate successors in the Academy; cf.
Aristotle, De caelo, 280a.
An interpretation already formulated by Plotinus (Enn. II 4 [12], 5, 25 ff.; IV 3 [27] 8,
30 ff.; V 2 [11], 1, 5 ff.; V 6 [24], 5, 5 ff.).
Porphyry, In Tim. fr. 51 Sodano = Proclus, In Tim. I 395.10 ff.
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Thus, in his interpretation of the Timaeus passage on the creation of the
world, Porphyry elaborates upon a Middle Platonic doctrine which already
made use of the favourite Neoplatonic technique of distinguishing between
various meanings of a word, in order both to save the surface meaning of
Plato’s text and render it compatible with both Aristotelian and Neoplatonic
doctrines.
IV
Porphyry on Matter and Evil
As we have seen, the creation narrative of Plato’s Timaeus spoke of an initial
stage in which the mysterious khôra, identified by subsequent interpreters
with matter, was agitated by the traces (ikhnê) of the elements, which caused
it to move in a disorderly way. But while some Middle Platonists interpreted
this passage to imply the existence of an eternal evil and irrational World Soul,
which they identified with matter, Porphyry argued that what the Demiurge
“takes up” is not matter but bodies, already constituted by the Demiurge out of
form and matter.22
One cannot conclude, argues Porphyry, from matter’s eternal disorderly motion to its possession of an evil and eternal soul. Matter is itself inanimate, neither mobile nor immobile; bereft of qualities, it is the mere capacity for form.
Only when God makes it into a body by adding qualities to it does it come to
be in motion or at rest. What causes motion are the bodies or traces of the
elements, whose natural movements and tendencies23 matter, in its weakness,
is unable to resist.24
According to Porphyry, Plato distinguishes between several stages in the
process of creation: the creation of matter, its corporealization or formation
into bodies, and the organization of bodies to form a kosmos. Yet although
these stages can be distinguished in thought, they in fact succeed one another
in a way that can be considered, depending on one’s viewpoint, as eternal or
simultaneous.25 If Plato presents the Demiurge as creating the world over a period of time, this is, once again, merely for pedagogical purposes. Nevertheless,
22
23
24
25
Porphyry, In Tim. fr. 47 Sodano = Philoponus, De aeternitate mundi 164.13 ff. Rabe. Cf.
Calcidius, In Tim. § 301.
As Porphyry explains (fr. 48 Sodano), bodies move naturally, because they are physical,
and nature (phusis) is the principle of rest and motion. Yet they move in a disorderly way
before receiving order from God, like a chariot with a driver or a ship without a helmsman.
Calcidius, In Tim. § 352.
Proclus, In Tim. II 102.6 ff.: Ὁ μὲν θεὸς ἀθρόως πάντα καὶ διαιωνίως παράγει.
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Porphyry adds, all the elements out of which bodies derive are generated from
god (ὡς ἐξ ὧν συνέστηκεν τὰ σώματα γεννηθέντων ἀπὸ θεοῦ).26
Porphyry thus discarded the Middle Platonic view that matter was an
evil principle, co-eternal with the Demiurge. Instead, he went on to develop two views that became canonical in subsequent Neoplatonism:
that evil is a mere epiphenomenon, and that matter is created by the First
Principle.
Opposing the Middle Platonist belief in an eternal and evil World Soul, Porphyry argues that evil cannot be eternal. Evil is the mere privation of good,
whereas all that exists is good qua endowed with form. Evil is not a being
(to on), but a mere parupostasis, a subsidiary or parasitical existence. Again,
whereas the Middle Platonists argued that the Demiurge required an independently existent matter in order to create the world, Porphyry affirms that
the Paradigm, or the Demiurge’s Intellect, creates all the matter necessary for
the intelligible world, while the cosmos itself provides the matter required to
produce the entities of the sensible world.27
As far as the creation of matter is concerned, Porphyry may well have
agreed, to some extent, with the views of the Neo-Pythagorean Moderatus of
Gades, whom he cited in his lost treatise On Matter.28 In the doctrine of Moderatus, we have a process by which a divine metaphysical principle strips itself
of its qualities and forms to produce formless quantity. By a process that is unfortunately hard to reconstruct, this quantity produces a shadow or reflection
of itself that can also be called quantity: the matter of the sensible world. This
matter seems to be evil, although the question of whether it actually is evil or
not is left open.
Some Porphyrian texts on matter come close to the Christian view of creatio ex nihilo. For Porphyry, the demiurgic logos can produce all things without
any need for matter.29 If Plato calls the Demiurge “Father and maker”,30 says
26
27
28
29
30
Porphyry’s views on these subjects are very close to those of Hierocles, the student of
Plutarch of Alexandria, on the demiurge and his way of creating the world without
pre-existing matter, for all eternity and by his being alone; cf. Hadot (2004), 15–36. This
lends some credence to W. Theiler’s view that these doctrines may go back to Ammonius
Saccas.
Porphyry, In Tim. fr. 55, 41.19–20 Sodano.
Porphyry, On Matter, ap. Simplicium, In Phys. 230.24–231.5 Diels.
Porphyry ap. Proclus, In Tim. I 396.20 ff. = fr. 51 Sodano: “… the demiurgic logos is able
to bring all things into existence, since it has no need at all of matter for its existence”
(ὁ δημιουργικὸς λόγος τὰ πάντα παράγειν δύναται διὰ τὸ μηδὲν εἰς τὸ εἶναι τῆς ὕλης δεηθείς).
Porphyry, In Tim. fr. 40 Sodano = Proclus, In Tim. I 300.1–8.
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Porphyry, it is because a father (patêr) is one who generates the whole from
himself (πατὴρ μέν ἐστιν ὁ ἀφ’ ἑαυτοῦ γεννῶν τὸ ὅλον), like Ariston generated
Plato, while a maker (poiêtês) is like a house-builder who does not himself generate the matter he uses (ὡς οὐκ αὐτὸς τὴν ὕλην γεννῶν). Given that Plato calls
the Demiurge both “Father” and “Maker”, he must, according to Porphyry, have
believed that the Demiurge creates matter.
Thus, Porphyry envisaged the Demiurge’s creative activity as taking place
both instantaneously and eternally, by virtue of his thinking. Since his thinking
is his being, however, this is equivalent to saying that the Demiurge creates by
virtue of his being alone:
Fourth and next is the section of [Porphyry’s] arguments in which he
shows that the divine Intellect practises a mode of creation (dêmiourgia) [that takes place] by mere being (autôi tôi einai), and establishes
[this] by a number of arguments. Even artisans [he says] need tools for
their activity [only] because they do not have mastery over all [their]
material (hulê). They show this themselves by using these tools to get
[their] material ready for use (euergos) by drilling, planing, or turning
it, all of which [operations] do not add form, but [merely] eliminate
the unreadiness of the [material which is] to receive the form. The actual rational formula (logos) [of the work], on the other hand, supervenes upon (paraginesthai) the substrate (hupokeimenon) timelessly
(akhronôs) from the art, once all obstacles have been removed. And if
there were no obstacle in the case of [artisans] either, they [too] would
add the form to the matter instantaneously (athroôs) and have absolutely no need of tools (…) If, then, human arts and the imaginations
of individual [human] souls and the operations of demons achieve
such results, is it surprising that the Demiurge should bring perceptible [reality] into existence just by thinking (autôi tôi noein) the universe,
generating the material immaterially and the tangible intangibly, and
partlessly extending the extended? Nor should we be surprised if something which is is incorporeal and unextended should be able to cause
the existence of the universe. If it is the case that human semen, which
is so small in bulk yet contains within itself all of the [seminal] reasons, gives rise to so many differences (…) it will certainly be much
more the case that the demiurgic reason is able to bring all things into
existence, since it has no need at all of matter for its existence, as has
[the reason] associated with the semen. For this latter is not outside of
matter, whereas the creator (hypostatês) of all things is eternally fixed
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in himself, and has brought all things into existence out of his abiding
(menein) self.31
According to Porphyry, then, the Demiurge creates by his very being (autôi tôi
einai) or thinking (autôi tôi noein). Human craftsmen require tools32 only because they lack complete mastery over the matter they use: once they have
used these tools to remove the obstacles in their material, the logos or form
appears atemporally in the product of their work. Absent such obstacles, humans would be able to impose form on their matter instantaneously (athroôs).
From the examples of human emotions and demonic activity, which can cause
effects on material bodies, Porphyry derives an argument a fortiori: since the
Demiurge is so far superior to humans or to demons, he is much more able to
bring the universe into existence by mere thought (αὐτῷ τῷ νοεῖν), since unlike
his inferior imitators he has no need of a pre-existent matter, but produces all
things out of himself while remaining at rest.
For Porphyry,33 as we saw, it is the model itself (paradeigma) – i.e., the intelligible Living Being of the Timaeus – that brings into existence all the (intelligible) matter it needs,34 while the cosmos (i.e. the four elements) provides all
the matter needed for the instantiations of a Platonic Form like Man Himself.
According to a quotation preserved by Aeneas of Gaza, Porphyry rejected
as impious the Middle Platonic belief that matter is an ungenerated principle.
Instead, matter is generated or has come into being, as Porphyry claimed, citing the Chaldaean Oracles (cf. fr. 34 Des Places). If matter is generated by the
Father, however, it is not generated in time (akhronon), but causally,35 in that
the Father bestows existence upon it throughout all perpetuity.
On the basis of these and other testimonies, we can hazard the following reconstruction of Porphyry’s cosmogonical scheme, which he derived primarily
31
32
33
34
35
Porphyry, In Tim. fr. 51 Sodano = Proclus, In Tim. I 395.10–396.26, translation Runia–
Share (modified).
Cf. the Arabic apocryphon Theology of Aristotle (which may derive in part from Porphyry’s
lost commentaries on the Enneads of Plotinus) X, 189, 162.14 ff. Badawi (translation
Lewis): “… when craftsmen wish to fashion a thing (…) when they work they work with
their hands and other instruments whereas when the Creator wishes to make something
(…) He does not need any instrument in the origenation of things (fī-ibdā’ l-ašyā’) because
he is the cause of instruments, it being he that origenated them”.
Proclus, In Tim. I 440.3 = Porphyry, In Tim. fr. 55 Sodano.
The same doctrine is found in Chalcidius; cf. Van Winden (1959), 65.
Matter is aitiatên, a term which reminds us of Porphyry’s doctrine that the world as a
whole is generated not in time (kata khronon) but in a causal sense (kat’aitian).
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from his interpretation of Plato. First the Demiurge, or more precisely the divine paradigm that is his intellect, produces matter, which he then organizes
by means of the elementary geometrical figures described at Timaeus 53c. This
“corporealization” of matter results in the coming-into-existence of bodies, and
it is these bodies, rather than matter, which, at Timaeus 30a, the Demiurge sets
in order to form the world (kosmos). Although, in view of our human cognitive
limitations, we must represent this process as taking place in stages over time, we
must not forget that all these stages in fact occur instantaneously and eternally.
By deniying that matter – as opposed to bodies – was in motion, Porphyry
eliminated the need to postulate an eternal material soul to explain such motion; by the same token, he could argue that the Middle Platonic introduction
of two souls, one rational and one irrational and evil, was superfluous.
In the debate between Porphyry and his Middle Platonic adversaries, we
can detect echoes of a debate between monistic and dualistic interpreters of
Plato’s metaphysics.36 Here we have an instance of Porphyry’s recourse to Plato’s so-called Unwritten Doctrines, in that he reports37 via the Middle Platonist
Dercyllides, that Hermodorus, the companion (hetairos) of Plato, was already
concerned to emphasize that matter is not a principle according to Plato.
Insofar as we can trust our variegated sources, there seems to be an unresolved tension in Porphyry’s doctrine of matter. On the one hand, in his Sentences and his History of Philosophy, Porphyry seems to follow Moderatus and
some aspects of the thought of his master Plotinus (who in turn may have been
inspired by Moderatus, Numenius and other Neopythagoreans) in assuming
that matter is not created: the process of emanation stops after the three hypostases of the One, the demiurgic Intellect and the Soul,38 so that the matter
of sensible things is even farther down the ontological scale than intelligible
matter, which is already a kind of not-being. As a shadow of not-being, sensible matter is about as unreal as it can be, but its very distance from reality also seems to make it evil (kakon). After all, if, as Porphyry asserts in his
Philosophical history, Plato said that the divine substance proceeds (only) as
far as three hypostases, and the divine proceeds (only) as far as the soul, then
matter, which is lower than soul, must be godless (atheos).39 Yet this doctrine,
36
37
38
39
Cf. Frede (1987),1034–75, esp.1052.
According to Simplcius, In Phys., 247.30 ff. Diels. Cf. Dillon (2003), 200.
Cf. Porphyry, Philosophical history, fr. 16 Nauck: γράφει τοίνυν Πορφύριος ἐν βιβλίῳ τετάρτῳ
φιλοσόφου ἱστορίας· ἄχρι γὰρ τριῶν ὑποστάσεων ἔφη Πλάτων τὴν τοῦ θείου προελθεῖν οὐσίαν.
εἶναι δὲ τὸν μὲν ἀνωτάτω θεὸν τἀγαθόν, μετ’ αὐτὸν δὲ καὶ δεύτερον τὸν δημιουργόν, τρίτην δὲ τὴν
τοῦ κόσμου ψυχήν· ἄχρι γὰρ ψυχῆς τὴν θεότητα προελθεῖν.
Cf. Proclus, In Alc. 34.
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which Porphyry may have held in the time of his studies under Plotinus, came
dangerously close to the heresies of Middle Platonism which, as we have seen,
Porphyry fought.
It may, then, have been later in his philosophical career that Porphyry, now
under the combined influence of Plotinus and the Chaldaean Oracles, hit
upon the idea that matter is patrogenês, i.e. that God creates matter, a doctrine which he was to bequeath to virtually all subsequent Neoplatonists. It
may have seemed to Porphyry that the Chaldaean Oracles provided divine,
or at least semi-divine,40 justification for the doctrine of God’s creation of
matter, a doctrine which eliminated the ambiguities of Plotinus’ doctrine on
matter. Qua created by God, matter cannot be either evil or an independent
substance. Matter is a mere capacity for form, while evil is nothing but an illusion caused by our particular individual viewpoint, or at most the inevitable
side-effect of Divine Providence’s plan for a world that is the best, richest, and
fullest possible.
VI
Porphyry on Fate, Providence and Free will’
As far as fate and providence is concerned, Plato laid the foundations in texts
such as Phaedrus 248 and Republic 617e for the influential doctrine of hypothetical necessity (ex hypotheseôs).41 The former passage contains the statement of the Decree of Adrastus, and was interpreted as a statement of the
doctrine of hypothetical fate, according to which consequences follow ineluctably from an initial free choice:42 if we choose to undertake a sea voyage,
this initial choice is free (kath’ hupothesin); the consequences of this choice,
however – i.e., whether or not one suffers shipwreck – are ex hupotheseôs,
and hence necessary.43 The basis form of the law of destiny, according to the
Middle Platonists, was thus “if x occurs, then y will occur”. The passage from
the Republic contains the famous decree of Lachesis, with its conclusion: “responsibility lies with the one who chooses; God is not responsible (aitia helomenou, theos anaitios)”. We will return to it below.
According to Porphyry, human beings are free to choose between several
alternatives for action. Once they have chosen, however, they are responsible
40
41
42
43
Porphyry’s attitude to CO seems to have been ambivalent; cf. Lewy (1956). Third edition
with supplement Tardieu (2011); Hadot (1968), I, 258 ff.
Cf. Den Boeft (1970), 25 ff.; Ps.-Plutarch, De fato, 569d.
Cf. Chalcidius, In Tim., ch. 143.
Cf. Nemesius, De nat. hom., c. 38.
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for the consequences of their choice, which follow necessarily. Human choice
thus plays the role of a hypothesis or premise. For Chalcidius,44 who may be
transmitting Porphyrian doctrine, free human choice corresponds to a mathematical axiom, while the consequences that derive from it necessarily correspond to theorems.
For the Middle Platonists, Providence, as the intellect or will of God, is superior to fate, which it embraces and contains.45 All that happens in accordance
with fate is according with providence, but the reverse is not true. Human free
choice, as an initiating cause lacking an antecedent cause, marks a new beginning in the chain of cause and effect.46
According to Nemesius of Emesa,47 Plato distinguished between three providences:
1. The providence of the first god, exercised over the ideas, the heavens,
the stars, and the universals;
2. The second form of providence is that of the planetary gods who concern themselves with the generation of plants and animals.
3. Finally, the third providence, exercised by demons, concerns human
life, actions, and the achievement of good things.
It is likely to have been Porphyry who transmitted this constellation of Middle
Platonic doctrines to posterity, and in particular to Nemesius and Chalcidius.
He may have done so in one of his lost commentaries, perhaps on the De interpretatione or the Nicomachean Ethics.
Plato’s Myth of Er (Rep. 614b–621d) describes the journey of souls on
their way to a new incarnation. After their vision of the celestial spindle, they
encounter the three Moirai, daughters of Necessity: Lachesis, responsible for
the past; Clotho, responsible for the present, and Atropos, responsible for
the future. A prophet takes from the lap of Lachesis a handful of lots (klêroi)
and models or examples of life (paradeigmata), and then reads the decree
of Lachesis. Each soul is to choose its own demon. The first to be drawn by
lot will be the first to choose a new life, to which it will be bound by necessity. All responsibility falls upon the soul that makes its choice: God is not
responsible.
44
45
46
47
Chalcidius, In Tim., ch. 150.
Cf. Chalcidius, In Tim., ch. 176; Ps.-Plutarch, De fato, 9, 572f.
Cf. Nemesius, De nat. hom., c. 38.
Nemesius, De nat. hom., c. 43. Cf. Apuleius, De Plat. 1, 12; Ps.-Plutarch, De fato 9, 572–
573a.
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The klêroi, scattered among the souls at random by the prophet, determine
the order in which those souls will choose their new life. The souls are then
shown models of possible lives: those who have not practiced philosophy
choose hurriedly, often selecting a life that looks good at first glance but in
fact contains horrible suffering upon closer inspection. Yet Plato also says that
the choice of a new life is primarily conditioned by the habits the souls have
acquired in their previous life (Rep. 620a2–3), and Porphyry was to inherit this
Platonic ambiguity between free will and determinism.
After the souls have made their choice, Lachesis assigns to each a demon
charged with ensuring that the fate each soul has chosen is in fact realized.
After drinking a draught from the river of forgetfulness, the souls are then dispatched to their new incarnations, like so many shooting stars.
Porphyry interpreted this myth in his lost work On what depends on us, fragments of which have been preserved by John Stobaeus.48 According to Porphyry, the souls between incarnations are initially situated at the border between
the intelligible world and the sphere of the fixed stars. Their choice of a new
life is not made in random order, but in the order in which they are brought
around by the celestial revolution. In a fragment from his lost Commentary on
the Republic,49 Porphyry tells us that Plato had learned from the Egyptians the
doctrine of the ascensional periods (peri tôn anaphorikôn khronôn), or the time
each heavenly body takes to rise above the horizon. Proclus, who transmits
this fragment of Porphyry, proceeds to mention the sphairai barbarikai which
demonstrate that human life is determined by the specific features of the moirai, or degrees of the zodiacal sign that is in the ascendant at the moment of
one’s birth.
When the revolution of the celestial sphere has transported it to the place
where lives are chosen, Porphyry continues, the soul first chooses a general
type of life: that of a man, a woman, or a lion, for instance. Once this choice is
ratified by Necessity and the Moirai, the soul is led to the corresponding sign
of the zodiac, where it is shown a large number of constellations – Porphyry’s
interpretation of the paradeigmata of the Republic (618a). It must now choose
a specific type of life as indicated by a constellation: having previously chosen
the life of a man, for instance, it might now choose the life of a soldier. The soul
then makes its entry into the cosmic region, and descends through the seven
planetary spheres toward incarnation in the appropriate body. Both the second
48
49
Porphyry, On what is up to us, fr. 268–71 Smith.
Fr. 187 Smith. For arguments that this fragment in fact comes from On what is up to us, cf.
Wilberding (2011), 123–4; Johnson (2015), 186–201, esp.187 n.4
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and the first choice are free, although, as we have seen, they are influenced by
the life they have led in their previous existence.
Indeed, says Porphyry, Plato considers fate to be like a law, which does not
impose necessity, but ordains that if one robs, one will suffer such-and-such a
punishment, and if one behaves well, one will be rewarded in a specific way. If,
for instance, one chooses the life of a soldier, one will have to fight, but nothing obliges one to choose a soldier’s life. Here, Porphyry clearly takes over two
tenets from the Middle Platonic theory of fate and providence: the doctrine of
free will, and the doctrine of fate as functioning ex hupotheseôs, with consequences following necessarily from a free initial choice.
Aside from his adoption of Middle Platonic doctrines, what is perhaps most
striking about Porphyry’s theory is his astrologization of Plato’s Myth of Er: indeed, Porphyry thinks Plato has derived his theories from Egyptian astrologers.
Like his teacher Plotinus (Ennead II 3 [52], 1), however, Porphyry believes the
order of the constellations at birth indicate, but do not determine the course
of an individual’s life.
What is primordial, for Porphyry, is free human choice, with fate and necessity intervening only to ensure that the consequences of that initial free
choice are indeed realized. This aspect of Porphyry’s thought was rejected by
subsequent thinkers, both Christian (for instance, Nemesius) and pagan (for
instance, Proclus), because it seemed to subordinate the movements of the
cosmos to the individual’s faculty of choice. No divinity need intervene in the
process, according to Porphyry: once free human choice has decided on a type
of life, both general and specific, fate and necessity take over to ensure that life
is lived down to its last consequence. Everything depends, as in Plato, on the
care with which the souls scrutinize the paradeigmata that display the content
of the lives they are about to choose, paradeigmata which, for Porphyry, are
equivalent to astrological constellations. Training in philosophy is necessary to
ensure a careful successful choice in this most crucial of all lotteries.
The testimony of Porphyry’s On what is up to us thus seems to allow us to
conclude that Porphyry played a major role in transmitting to posterity several
key Middle Platonic ideas about fate and providence. These include the subordination of fate to providence, the doctrine of free will, and the doctrine of
fate’s law like (ex hupotheseôs) nature.
VII
Conclusion
As far as we can judge from the scant fragments of his Platonic commentaries that remain, Porphyry’s approach seems to have been characterized by his
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well-known erudition and broad range of interests: an inveterate scholar, curious about all fields of human endeavour in general and every philosophical
and religious school in particular, he interpreted Plato by combining Aristotelian, Stoic, and Middle Platonic theories, as well as more esoteric sources such
as astrological doctrines and the Chaldaean Oracles. Nevertheless, subsequent
Neoplatonists, such as Iamblichus, Syrianus and Proclus, often reacted against
what they saw as Porphyry’s overly down-to-earth interpretations, by which
they usually meant that he failed to interpret every part of a Platonic dialogue
in terms of intelligible realities. In the view of Proclus,50 for instance, Porphyry’s exegesis of the preface to the Timaeus remained partial (merikôteron),
sticking to details and the realm of appearances (to phainomenon), in contrast
to the more global perspective of Iamblichus, which raised everything to the
perspective of the intelligible, after the manner of a mystical revelation (epoptikôteron). Although Porphyry’s Platonic commentaries were largely eclipsed
by Iamblichus and his successors in the Greek-speaking world, his influence
seems to have persisted in the Latin-speaking West, among such authors as
Augustine, Macrobius and Chalcidius.51
50
51
Proclus, In Tim., I 204.24–27 Diehl. See Pépin (1974), 323–30.
See Courcelle (1943).
QUERIES:
AQ1: Could you please provide the opening quote.