But Dionysius soon found that he could not preserve the explanation in his mind, after Plato’s departure — that difficulties again crowded upon him — and that it was necessary to send a confidential messenger to Athens to entreat farther elucidations. In reply, Plato sends back by the messenger what is now numbered as the second of his Epistles. He writes avowedly in enigmatical language, so that, if the letter be lost, the finder will not be able to understand it; and he enjoins Dionysius to burn it after frequent perusal.[17] He expresses his hope that when Dionysius has debated the matter often with the best minds near him, the clouds will clear away of themselves, and the moment of illumination will supervene.[18] He especially warns Dionysius against talking about these matters to unschooled men, who will be sure to laugh at them; though by minds properly prepared, they will be received with the most fervent welcome.[19] He affirms that Dionysius is much superior in philosophical debate to his companions; who were overcome in debate with him, not because they suffered themselves designedly to be overcome (out of flattery towards the despot, as some ill-natured persons alleged), but because they could not defend themselves against the Elenchus as applied by Dionysius.[20] Lastly, Plato advises Dionysius to write down nothing, since what has once been written will be sure to disappear from the memory; but to trust altogether to learning by heart, meditation, and repeated debate, as a guarantee for retention in his mind. “It is for that reason” (Plato says)[21] “that I have never myself written anything upon these subjects. There neither is, nor shall there ever be, any treatise of Plato. The opinions called by the name of Plato are those of Sokrates, in his days of youthful vigour and glory.”

[17] Plat. Epist. ii. 312 E: φραστέον δή σοι δι’ αἰνιγμῶν ἵν ἄν τι ἡ δέλτος ἢ πόντος ἢ γῆς ἐν πτυχαῖς πάθῃ, ὁ ἀναγνοὺς μὴ γνῷ. 314 C: ἔῤῥωσο καὶ πείθου, καὶ τὴν ἐπιστολὴν ταύτην νῦν πρῶτον πολλάκις ἀναγνοὺς κατάκαυσον.

Proklus, in his Commentary on the Timæus (pp. 40, 41), remarks the fondness of Plato for τὸ αἰνιγματωδές.

[18] Plat. Epist. ii. 313 D.

[19] Plat. Epist. ii. 314 A. εὐλαβοῦ μέντοι μή ποτε ἐκπέσῃ ταῦτα εἰς ἀνθρώπους ἀπαιδεύτους.

[20] Plat. Epist. ii. 314 D.

[21] Plat. Epist. ii. 314 C. μεγίστη δὲ φυλακὴ τὸ μὴ γράφειν ἀλλ’ ἐκμανθάνειν· οὐ γὰρ ἐστι τὰ γραφέντα μὴ οὐκ ἐκπεσεῖν. διὰ ταῦτα οὐδὲν πώποτ’ ἐγὼ περὶ τούτων γέγραφα, οὔδ’ ἔστι σύγγραμμα Πλάτωνος οὐδὲν οὔδ’ ἔσται· τὰ δὲ νῦν λεγόμενα, Σωκράτους ἐστὶ καλοῦ καὶ νέου γεγονότος.

“Addamus ad superiora” (says Wesseling, Epist. ad Venemam, p. 41, Utrecht, 1748), “Platonem videri semper voluisse, dialogos, in quibus de Philosophiâ, deque Republicâ, atque ejus Legibus, inter confabulantes actum fuit, non sui ingenii sed Socratici, fœtus esse”.

He refuses to furnish any written, authoritative exposition of his own philosophical doctrine.

Such is the language addressed by Plato to the younger Dionysius, in a letter written seemingly between 362-357 B.C. In another letter, written about ten years afterwards (353-352 B.C.) to the friends of Dion (after Dion’s death), he expresses the like repugnance to the idea of furnishing any written authoritative exposition of his principal doctrines. “There never shall be any expository treatise of mine upon them” (he declares). “Others have tried, Dionysius among the number, to write them down; but they do not know what they attempt. I could myself do this better than any one, and I should consider it the proudest deed in my life, as well as a signal benefit to mankind, to bring forward an exposition of Nature luminous to all.[22] But I think the attempt would be nowise beneficial, except to a few, who require only slight direction to enable them to find it for themselves: to most persons it would do no good, but would only fill them with empty conceit of knowledge, and with contempt for others.[23] These matters cannot be communicated in words as other sciences are. Out of repeated debates on them, and much social intercourse, there is kindled suddenly a light in the mind, as from fire bursting forth, which, when once generated, keeps itself alive.”[24]