THE QUESTION CONCERNING THE POSSIBILITY OF THE ΨΕΥΔΗΣ ΔΟΞΑ
of man to the being of beings. What is retained is in each case retain-able in a different way.
It is one of these modes of retaining which Plato now attempts to bring to light, in the second simile of the aviary (197 b 8 ff.). We shall briefly follow what he says, without going into its context within the dialogue.
[Socrates] Οὐ τοίνυν μοι ταὐτὸν φαίνεται τῷ κεκτῆσθαι τὸ ἔχειν. οἷον ἱμάτιον πριάμενός τις καὶ ἐγκρατὴς ὢν μὴ φορῶν, ἔχειν μὲν οὐκ ἂν αὐτὸν αὐτό, κεκτῆσθαί γε μὴν φαῖμεν.
[Theaetetus] Ὀρθῶς γε.
Ὅρα δὴ καὶ ἐπιστήμην εἰ δυνατὸν οὕτω κεκτημένον μὴ ἔχειν, ἀλλ᾽ ὥσπερ εἴ τις ὄρνιθας ἀγρίας, περιστερὰς ἤ τι ἄλλο, θηρεύσας οἴκοι κατασκευασάμενος περιστερεῶνα τρέφοι, τρόπον μὲν γὰρ ἄν πού τινα φαῖμεν αὐτὸν αὐτὰς ἀεὶ ἔχειν, ὅτι δὴ κέκτηται. ἦ γάρ;
Ναί.
Τρόπον δέ γ᾽ ἄλλον οὐδεμίαν ἔχειν, ἀλλὰ δύναμιν μὲν αὐτῷ περὶ αὐτὰς παραγεγονέναι, ἐπειδὴ ἐν οἰκείῳ περιβόλῳ ὑποχειρίους ἐποιήσατο, λαβεῖν καὶ σχεῖν ἐπειδὰν βούληται, θηρευσαμένῳ ἣν ἂν ἀεὶ ἐθέλῃ, καὶ πάλιν ἀφιέναι, καὶ τοῦτο ἐξεῖναι ποιεῖν ὁποσάκις ἂν δοκῇ αὐτῷ.
Ἔστι ταῦτα.
Πάλιν δή, ὥσπερ ἐν τοῖς πρόσθεν κήρινόν τι ἐν ταῖς ψυχαῖς κατεσκευάζομεν οὐκ οἶδ᾽ ὅτι πλάσμα, νῦν αὖ ἐν ἑκάστῃ ψυχῇ ποιήσωμεν περιστερεῶνά τινα παντοδαπῶν ὀρνίθων, τὰς μὲν κατ᾽ ἀγέλας οὔσας χωρὶς τῶν ἄλλων, τὰς δὲ κατ᾽ ὀλίγας, ἐνίας δὲ μόνας διὰ πασῶν ὅπῃ ἂν τύχωσι πετομένας.
Πεποιήσθω δή. ἀλλὰ τί τοὐντεῦθεν;
Παιδίων μὲν ὄντων φάναι χρὴ εἶναι τοῦτο τὸ ἀγγεῖον κενόν, ἀντὶ δὲ τῶν ὀρνίθων ἐπιστήμας νοῆσαι: ἣν δ᾽ ἂν ἐπιστήμην κτησάμενος καθείρξῃ εἰς τὸν περίβολον, φάναι αὐτὸν μεμαθηκέναι ἢ ηὑρηκέναι τὸ πρᾶγμα οὗ ἦν αὕτη ἡ ἐπιστήμη, καὶ τὸ ἐπίστασθαι τοῦτ᾽ εἶναι.
Ἔστω.
'Well, having and possessing seem different things. If a man buys a cloak and in this sense brings it under his power, but does not wear it, we should certainly say, not that he has it on, but that he possesses it/
'And rightly/
'Now see whether it is possible in the same way tor someone who possesses knowledge not to have it, in like manner, for instance, to a man who catches wild birds - pigeons or the like - and sets up an aviary at home in which to