What these principia are, which Plato here keeps in the background, I do not clearly understand. Susemihl (Entwickelung der Plat. Phil. ii. p. 405) and Martin (Études sur le Timée, ii. p. 173, note 56) have both given elucidations of this passage, but neither of them appear to me satisfactory. Simplikius says:— Ὁ Πλάτων τὴν φυσιολογίαν εἰκοτολογίαν ἔλεγεν εἶναι, ᾧ καὶ Ἀριστοτέλης συμμαρτυρεῖ, Schol. Aristot. Phys. 325, a. 25 Brandis.

[10] Isokrates, De Permutatione, Or. xv. s. 287-288-304. ἡγοῦμαι γὰρ τὰς μὲν τοιαύτας περιττολογίας ὁμοίας εἶναι ταῖς θαυματοποιίαις ταῖς οὐδὲν μὲν ὠφελούσαις, ὑπὸ δὲ τῶν ἀνοήτων περιστάτοις γιγνομέναις (s. 288). …

τοὺς δὲ τῶν μὲν ἀναγκαίων ἀμελοῦντας, τὰς δὲ τῶν παλαιῶν σοφιστῶν τερατολογίας ἀγαπῶντας, φιλοσοφεῖν φασίν (s. 304).

Compare another passage of Isokrates, the opening of Orat. x. Encomium Helenæ; in which latter passage he seems plainly to notice one of the main ethical doctrines advanced by Plato, though he does not mention Plato’s name, nor indeed the name of any living person.

[11] Plato, Sophist. pp. 242-243. Μῦθόν τινα ἕκαστος φαίνεταί μοι διηγεῖσθαι παισὶν ὡς οὖσιν ἡμῖν· ὁ μὲν ὡς τρία τὰ ὄντα, πολεμεῖ δὲ ἀλλήλοις ἐνίοτε αὐτῶν ἄττα πῃ, τότε δὲ καὶ φίλα γιγνόμενα γάμους τε καὶ τόκους καὶ τροφὰς τῶν ἐκγόνων παρέχεται (p. 242 C-D).

[12] Xenophon, Memorab. i. 1, 11-14. Οὐδεὶς δὲ πώποτε Σωκράτους οὐδὲν ἀσεβὲς οὐδὲ ἀνόσιον οὔτε πράττοντος εἶδεν οὔτε λέγοντος ἤκουσεν· οὐδὲ γὰρ περὶ τῆς τῶν πάντων φύσεως ἧπερ τῶν ἄλλων οἵ πλεῖστοι, διελέγετο, σκοπῶν ὅπως ὁ καλούμενος ὑπὸ τῶν σοφιστῶν κόσμος ἔχει, καὶ τίσιν ἀνάγκαις ἕκαστα γίγνεται τῶν οὐρανίων· ἀλλὰ καὶ τοὺς φροντίζοντας τὰ τοιαῦτα μωραίνοντας ἀπεδείκνυε.

Lucretius, i. 80:—

Illud in his rebus vereor, ne forté rearis
Impia te rationis inire elementa, viamque
Indugredi sceleris, &c.

The above cited passage of Xenophon shows that the term Κόσμος was in his time a technical word among philosophers, not yet accepted in that meaning by the general public. The aversion to investigation of the Kosmos, on the ground of impiety, entertained by Sokrates and Xenophon, is expressed by Plato in the Leges (vii. 821 A) in the following words of the principal speaker, — Τὸν μέγιστον θεὸν καὶ ὅλον τὸν κόσμον φαμὲν οὔτε ζητεῖν δεῖν οὔτε πολυπραγμονεῖν τὰς αἰτίας ἐρευνῶντας· οὐ γὰρ οὐδ’ ὅσιον εἶναι· τὸ δὲ ἔοικε πᾶν τούτου τοὐναντίον γιγνόμενον ὀρθῶς ἂν γίγνεσθαι. This last passage is sometimes cited as if the word φαμὲν expressed the opinion of the principal speaker, or of Plato himself — which is a mistake: φαμὲν here expresses the opinion which the principal speaker is about to controvert.

[13] See above, [vol. i. ch. ix.] of the present work, where the Platonic Apology is reviewed.