61.
Διὸ καὶ Ξενοκράτης οὐκ ἀποδείκνυσιν· οὐ γὰρ εἷς ἀριθμῷ ὁ εὐδαίμων οὐδ’ ὁ σπουδαῖος βίος, ὥστ’ οὐκ ἀναγκαῖον τὸν αὐτὸν εἶναι, διότι ἄμφω αἱρετώτατοι, ἀλλὰ τὸν ἕτερον ὑπὸ τὸν ἕτερον.Fragmenta. Xenocrates of Chalcedon. ed. Friedrich Wilhelm August Mullach. Paris. 1881.
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