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Theaetetus

§195

Causes of False Opinion and Conceptual Errors with Numbers

Socrates summarizes how poor mental conditions lead to sensory errors and ignorance, and then introduces a new difficulty: the current definition of false opinion cannot explain conceptual errors involving purely abstract numbers.

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§195

ΣΩ. ἀσαφῆ δὲ καὶ οἱ τὰ σκληρά·1 βάθος γὰρ οὐκ ἔνι. ἀσαφῆ δὲ καὶ οἱ τὰ ὑγρά· ὑπὸ γὰρ τοῦ συγχεῖσθαι ταχὺ γίγνεται ἀμυδρά. ἐὰν δὲ πρὸς πᾶσι τούτοις ἐπʼ ἀλλήλων συμπεπτωκότα ᾖ ὑπὸ στενοχωρίας, ἐάν του σμικρὸν ᾖ τὸ ψυχάριον, ἔτι ἀσαφέστερα ἐκείνων. πάντες οὖν οὗτοι γίγνονται οἷοι δοξάζειν ψευδῆ. ὅταν γάρ τι ὁρῶσιν ἢ ἀκούωσιν ἢ ἐπινοῶσιν, ἕκαστα ἀπονέμειν ταχὺ ἑκάστοις οὐ δυνάμενοι βραδεῖς τέ εἰσι καὶ ἀλλοτριονομοῦντες παρορῶσί τε καὶ παρακούουσι καὶ παρανοοῦσι πλεῖστα, καὶ καλοῦνται αὖ οὗτοι ἐψευσμένοι τε δὴ τῶν ὄντων καὶ ἀμαθεῖς. ΘΕΑΙ. ὀρθότατα ἀνθρώπων λέγεις, ὦ Σώκρατες. ΣΩ. φῶμεν ἄρα ἐν ἡμῖν ψευδεῖς δόξας εἶναι; ΘΕΑΙ. σφόδρα γε. ΣΩ. καὶ ἀληθεῖς δή; ΘΕΑΙ. καὶ ἀληθεῖς. ΣΩ. ἤδη οὖν οἰόμεθα ἱκανῶς ὡμολογῆσθαι ὅτι παντὸς μᾶλλον ἐστὸν ἀμφοτέρα τούτω τὼ δόξα; ΘΕΑΙ. ὑπερφυῶς μὲν οὖν. ΣΩ. δεινόν τε, ὦ Θεαίτητε, ὡς ἀληθῶς κινδυνεύει καὶ ἀηδὲς εἶναι ἀνὴρ ἀδολέσχης. ΘΕΑΙ. τί δέ; πρὸς τί τοῦτʼ εἶπες; ΣΩ. τὴν ἐμαυτοῦ δυσμαθίαν δυσχεράνας καὶ ὡς ἀληθῶς ἀδολεσχίαν. τί γὰρ ἄν τις ἄλλο θεῖτο ὄνομα, ὅταν ἄνω κάτω τοὺς λόγους ἕλκῃ τις2 ὑπὸ νωθείας οὐ δυνάμενος πεισθῆναι, καὶ ᾖ δυσαπάλλακτος ἀφʼ ἑκάστου λόγου; ΘΕΑΙ. σὺ δὲ δὴ τί δυσχεραίνεις; ΣΩ. οὐ δυσχεραίνω μόνον ἀλλὰ καὶ δέδοικα ὅτι ἀποκρινοῦμαι ἄν τις ἔρηταί με· ὦ Σώκρατες, ηὕρηκας δὴ ψευδῆ δόξαν, ὅτι οὔτε ἐν ταῖς αἰσθήσεσίν ἐστι πρὸς ἀλλήλας οὔτʼ ἐν ταῖς διανοίαις ἀλλʼ ἐν τῇ συνάψει αἰσθήσεως πρὸς διάνοιαν; φήσω δὲ ἐγὼ οἶμαι καλλωπιζόμενος ὥς τι ηὑρηκότων ἡμῶν καλόν.3 ΘΕΑΙ. ἔμοιγε δοκεῖ, ὦ Σώκρατες, οὐκ αἰσχρὸν εἶναι τὸ νῦν ἀποδεδειγμένον. ΣΩ. οὐκοῦν, φησί, λέγεις ὅτι αὖ τὸν ἄνθρωπον ὃν διανοούμεθα μόνον, ὁρῶμεν δʼ οὔ, ἵππον οὐκ ἄν ποτε οἰηθείημεν εἶναι, ὃν αὖ οὔτε ὁρῶμεν οὔτε ἁπτόμεθα, διανοούμεθα δὲ μόνον καὶ ἄλλʼ οὐδὲν αἰσθανόμεθα περὶ αὐτοῦ; ταῦτα οἶμαι φήσω λέγειν. ΘΕΑΙ. καὶ ὀρθῶς γε. ΣΩ. τί οὖν, φησί, τὰ ἕνδεκα ἃ μηδὲν ἄλλο ἢ διανοεῖταί τις, ἄλλο τι ἐκ τούτου τοῦ λόγου οὐκ ἄν ποτε οἰηθείη δώδεκα εἶναι4 ἃ μόνον αὖ διανοεῖται; ἴθι οὖν δή, σὺ ἀποκρίνου. ΘΕΑΙ. ἀλλʼ ἀποκρινοῦμαι ὅτι ὁρῶν μὲν ἄν τις ἢ ἐφαπτόμενος οἰηθείη τὰ ἕνδεκα δώδεκα εἶναι, ἃ μέντοι ἐν τῇ διανοίᾳ ἔχει, οὐκ ἄν ποτε περὶ αὐτῶν ταῦτα δοξάσειεν οὕτως.

​SOCRATES: And those of people who have hard hearts are also indistinct; for there is no depth in them. And those of people who have wet hearts are also indistinct; for because of being jumbled together they quickly become faint. And if, in addition to all these things, they are fallen upon one another through lack of room, if someone’s little soul is small, they are even more indistinct than those. All these people, then, become such as to opine false things. For when they see or hear or think of something, being unable to assign quickly each to each, they are slow and, mismatching, they missee, mishear, and misthink in most cases, and these in turn are indeed called deceived about beings and ignorant. THEAETETUS: You speak most correctly of all men, Socrates. SOCRATES: Shall we say, then, that false opinions exist in us? THEAETETUS: Most certainly. SOCRATES: And true ones, too? THEAETETUS: And true ones. SOCRATES: Do we believe, then, that it has now been sufficiently agreed that both of these two opinions most certainly exist? THEAETETUS: Most extraordinarily so. SOCRATES: It is a terrible thing, Theaetetus, and truly seems to be unpleasant, a babbling man. THEAETETUS: Why so? In regard to what did you say this? SOCRATES: Disliking my own slowness of learning and, in truth, my babbling. For what other name could one put on it, when someone drags the arguments up and down out of sluggishness, unable to be persuaded, and is hard to clear away from each argument? THEAETETUS: But why indeed are you vexed? SOCRATES: I am not only vexed but also afraid of what I shall answer if someone asks me: “Socrates, have you indeed found false opinion, that it is neither in the perceptions in relation to one another nor in the thoughts, but in the juncture of perception with thought?” And I shall say, I suppose, putting on airs, as if we had found something beautiful. THEAETETUS: To me at least, Socrates, what has now been demonstrated does not seem to be ugly. SOCRATES: “Is it not, then,” he will say, “that you say we would never in turn think that the man whom we only think of, but do not see, is a horse, which in turn we neither see nor touch, but only think of and perceive nothing else about?” I suppose I shall say that we say these things. THEAETETUS: And correctly indeed. SOCRATES: “What then,” he will say, “could anyone ever think, according to this argument, that eleven, which one does nothing other than think of, is twelve, which in turn one only thinks of?” Come then indeed, you answer. THEAETETUS: Well, I shall answer that anyone seeing or touching them might think eleven is twelve, but as for the things he holds in his thought, he would never opine these things about them in this way.

Syntax notes4 items
  1. 195ἀσαφῆ δὲ καὶ οἱ τὰ σκληρά

    The main verb ἴσχουσιν (or γίγνονται) and the object τὰ ἐκμαγεῖα are omitted from the preceding context (οἱ δὲ δὴ λάσιον καὶ τραχὺ... ἀσαφῆ τὰ ἐκμαγεῖα ἴσχουσιν). It must be understood as "those of people who have hard [hearts] also hold indistinct [impressions]."

  2. 195cὅταν ἄνω κάτω τοὺς λόγους ἕλκῃ τις

    The adverbial phrase ἄνω κάτω (up and down, here and there) modifies the verb ἕλκῃ (drag), describing the act of confusing and twisting arguments. The ὅταν clause with the subjunctive represents a general or repeated condition.

  3. 195dὡς τι ηὑρηκότων ἡμῶν καλόν

    A genitive absolute construction with the subjective/pretextual conjunction ὡς. The perfect participle ηὑρηκότων indicates completed action, expressing the subjective viewpoint: "as if we had found something beautiful."

  4. 195eἄλλο τι ἐκ τούτου τοῦ λόγου οὐκ ἄν ποτε οἰηθείη δώδεκα εἶναι

    The idiom ἄλλο τι [ἤ] (with ἤ omitted here) followed by a negative functions as an interrogative formula expecting a strong affirmative answer ("is it not the case that...?"). It rhetorically asks: "According to this argument, is it not the case that one would never think eleven to be twelve?"

Translated by Gemini 3.5 Flash (published 2026-05-22) · Revision history (1, latest 2026-09-21)
  • 2026-09-21 AI review — translation 1
urn:cts:greekLit:tlg0059.tlg006.humanitext-grc2:195