Πλάτωνος Πολιτεία
. On the name, characters, and date of action of the dialogue, see
Introd. §§ 1, 2, 3.
ξυμβολαια
are contracts where money is involved. Polemarchus (as in
εἰς ἀργυρίου in B below), in harmony with the natural meaning of Simonides' saying, thinks first of pecuniary dealings as the sphere in which
δικαιοσύνη acts. Socrates substitutes for
ξυμβόλαια the more general term
κοινωνήματα, in order once more to introduce the analogy of the arts.
εἰς τίνα δὴ κοινωνίαν
is idiomatic for
εἰς τίνος δὴ κοινωνίαν. Compare VIII 556 C
ἢ ἐν ὁδῶν πορείαις ἢ ἐν ἄλλαις τισὶ κοινωνίαις and
τὴν τιμὴν ταύτην (where the English idiom would expect
τὴν τιμὴν ταύτης) in II 371 E. In spite of
εἰς κρουμάτων and
εἰς ἀργυρίου, it is not necessary to read (with Richards)
τίνος.
παρακαταθέσθαι καὶ σῶν εἶναι
. The double expression is necessary to explain
κοινῇ χρῆσθαι: the
κοινωνία arises because one deposits the money and by the other it is kept safe.
ἄχρηστον ‐‐ χρήσιμος
. ἄχρηστος fluctuates between ‘unused’ and ‘useless’: the latter sense is predominant here and gives an epigrammatic tone to the sentence (cf.
ἐν μὲν χρήσει ἄχρηστος, ἐν δὲ ἀχρηστίᾳ χρήσιμος in D). It is noticeable that Plato does not take into account the possibility of money being deposited at interest: in this case the money could not be said to be useless.
καὶ κοινῇ καὶ ἰδίᾳ
: not ‘to the individual and to the state,’ but ‘both in dealings with others, and in personal concerns.’ The words
καὶ ἰδίᾳ are, strictly speaking, irrelevant, for it is with
κοινωνήματα (in the widest sense) that we are concerned. They are to be regarded merely as a rhetorical amplification for the sake of emphasis: cf. infra 350 A, 351 A notes
οὐκ ἂν οὖν κτλ.
See cr. n. Some may think that we should read
οὐκοῦν (with the majority of MSS) and cancel
εἴη after
σπουδαῖον (so also Vind. D), understanding
ἐστι. The accidental omission of
ἄν is however not uncommon in Plato's MSS: see on IV 437 B.
οὗτος καὶ φυλάξασθαι
. Because knowledge of anything implies knowledge also of its opposite, according to the usual Socratic view. See
Phaed. 97 D
οὐδὲν ἄλλο σκοπεῖν προσήκειν ἄνθρωπον—ἀλλ’ ἢ τὸ ἄριστον καὶ τὸ βέλτιστον· ἀναγκαῖον δὲ εἶναι τὸν αὐτὸν τοῦτον καὶ τὸ χεῖρον εἰδέναι,
Charm. 166 E
,
Hipp. Min. 367 A ff. See also Stewart's
Notes on the Nicomachean Ethics Vol. I p. 378.
φυλάξασθαι κτλ.
See cr. n. With the emendation in the text, the argument is as follows: (1) he who can
πατάξαι, can
φυλάξασθαι: (2) he who can
φυλάξασθαι (
νόσον), can
λαθεῖν ἐμποιήσας (
νόσον): (3) he who can
κλέψαι (
τὰ τῶν πολεμίων), is a good
φύλαξ of an army. Thus the predicate of each step in the argument corresponds to the subject of the step next following: for
λαθεῖν ἐμποιήσας (
νόσον) is to be taken as parallel to
κλέψαι (
τὰ τῶν πολεμίων). The argument is unsound, and not intended to be serious: it is enough that it suffices to bewilder Polemarchus. For a further discussion on this passage see App. II.