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V B 370
V B 370 DIOG. LAERT. VI 73:
[Diogeni placuit]: μουσικῆς τε καὶ γεωμετρικῆς καὶ ἀστρολογίας καὶ τῶν τοιούτων ἀμελεῖν, ὡς ἀχρήστων καὶ οὐκ ἀναγκαίων.