Note 14 — Chapter VI · PLATONIC CANON, AS RECOGNISED BY THRASYLLUS.
Reading edition
Diog. L. iii. 61-62: Ἔνιοι δέ, ὧν ἔστι καὶ Ἀριστοφάνης ὁ γραμματικός, εἰς τριλογίας ἕλκουσι τοὺς διαλόγους· καὶ πρώτην μὲν τιθέασιν ἧς ἡγεῖται Πολιτεία, Τίμαιος, Κριτίας· δευτέραν, Σοφιστής, Πολιτικός, Κράτυλος· τρίτην, Νόμοι, Μίνως, Ἐπινομίς· τετάρτην, Θεαίτητος, Εὐθύφρων, Ἀπολογία· πέμπτην, Κρίτων, Φαίδων, Ἐπιστολαί· τὰ δὲ ἄλλα καθ’ ἒν καὶ ἀτάκτως.
The word γραμματικὸς, unfortunately, has no single English word exactly corresponding to it.
Thrasyllus, when he afterwards applied the classification by Tetralogies to the works of Demokritus (as he did also to those of Plato) could only include a certain portion of the works in his Tetralogies, and was forced to enumerate the remainder as ἀσύντακτα (Diog. L. ix. 46, 47). It appears that he included all Plato’s works in his Platonic Tetralogies.