14 Concepts – (Ancient) Problems and Solutions
In Antiquity, several words can stand for a concept:axi¯oma,
3
arch¯e,
4
eidos /genos,
5
ennoia,
6
koinai ennoiai,
7
epinoia,
8
no¯ema,
9
enno¯ema,
10
logos,
11
katholou,
12
katholou
logoi,
13
koinon,
14
lekton,
15
prol¯epsis.
16
Some of these expressions can be qualified by
means of adjectives such asdoxastos / doxastikos (pertaining todoxa),husterogen¯es
3
Themistius,In de anima 104.1–2 talks aboutpr¯ota axi¯omata. See, moreover,O’Meara (2001),
118, and Syrianus,In Met. 89.30ff. These axioms are mentioned in Aristotle’sMetaphysics
3–7
(law of contradiction, law of the excluded middle). Syrianus, as with Proclus, holds that true
axioms of science areinnate (In Met. 91.3:
$μ ¹ 4 $
). SeeLongo (2005), 141–223, on such axioms in Syrianus.
4
See Aristotle,An.Post. II 19, where he speaks about thepr¯otai archai of syllogism, and below
ch. III.4. The terminology recurs in the ancient commentaries onAn.Post. II 19 and in Syrianus’
and Proclus’ criticism of Aristotle, see below ch. V.1–2.
5
In Neoplatonic authors, the innate knowledge of the soul (logoi orlogoi ousi¯odeis, see below
ch. VI.2.4–6 and ch. VII.1) can also be called ‘Forms in the soul’ (eid¯e en psuch¯ei), seeHelmig
(2008), 46 with note 69. According to the Neoplatonic axiom that ‘all things are in all things’
(panta en pasin, Proclus,Elem.Theol. § 103 withDodds’ (
2
1963) commentaryad loc.), Forms
exist on all levels of reality. For the use ofgenos in this respect see Ammonius,In Isag. 68.25–69.3.
6
On the termennoia, which already occurs in Plato (e.g.,Phaedo 73c andPhilebus 59d), in
Middle and Neoplatonism seeDörrie /Baltes (2002b), 128–130. See also the next note.
7
On the Stoic common notions seeCherniss (1976);Gourinat (2000), andDyson (2009).
Chiaradonna (2007) studies the expression in Alcinous, Galen, Plotinus, and Porphyry. See,
moreover, Themistius,In de anima 103.38:
¹ λ ; On the role and func-
tion of common notions in Proclus, see below ch. VII.1.4. Syrianus’ use of the term is investi-
gated byLongo (2005), 182–201.
8
SeeBarnes (2003), 40 note 74, and on ‘bare notions’ (psillai epinoiai) pp. 41–42.
9
See alreadyParm. 132b–c (on whether Forms can be thoughts) and below ch. II.2.2. See also
Proclus,In Parm. IV 890.30–906.2 (Steel) [= Proclus’ commentary on this passage]. However,
usually the wordno¯ema refers rather to an episode of thought (thought process) and not to a con-
cept.
10
AtIn Parm. IV 896.13 (Steel), Proclus explainsenno¯emata as $μ φ
$
. The wordenno¯ema was common in Stoic circles (see von Arnim’s index s.v.).
Neoplatonists frequently use the adjectiveenno¯ematikos (together witheidos orgenos) to refer
to an abstracted universal or, more generally, a universal in the mind (Ammonius,In Isag.
68.25–69.3; Philoponus,In Cat. 58.20). See below ch. VII.7.
11Onlogos /logoi signifying the innate knowledge of the soul (from Plotinus onwards), see below
ch. IV.3.2; VI.2.4–6, and VII.1. In Proclus, theselogoi are called ‘essential reason-principles’
(logoi ousi¯odeis), because they constitute the essence of the soul (seeSteel [1997]).
12
As withkoinon (see note 14),katholou can be used for the form in matter or the universal concept
in the soul (see already Aristotle,An.Post. II 19, 100
a
16 und 100
b
2).
13
Thekatholou logoi signify universal concepts in Syrianus (In met. 25.21–22; 53.5, and 88.26)
and Proclus (In Parm. IV 896.23 [Steel] andIn Tim. I 32.6).
14
The word frequently refers to the common element in things or the form in matter. It can also
refer to the abstracted universal in the soul, see Simpl.,In Cat. 83.8–16.
15Onlekta as concepts, seeCaston (1999).
16
On the Stoic notion of pre-conceptions (prol¯epsis) seeSandbach (1971b) andGourinat
(2000) and, most recently,Dyson (2009). Outside Stoicism the word does not seem to play an
important role.