ὡσπεροῦν
From LSJ
περὶ οὐδὲν γὰρ οὕτως ὑπάρχει τῶν ἀνθρωπίνων ἔργων βεβαιότης ὡς περὶ τὰς ἐνεργείας τὰς κατ' ἀρετήν → since none of man's functions possess the quality of permanence so fully as the activities in conformity with virtue
German (Pape)
[Seite 1422] adv., wie denn auch wirklich, εἰ δ' ἔστιν, ὡςπεροῦν ἔστι, θεός Plat. Phaedr. 242 e. so daß das οὖν seine eigentliche Bedeutung beibehält.