ἄσφυκτον
From LSJ
Φιλοκαλοῦμέν τε γὰρ μετ' εὐτελείας καὶ φιλοσοφοῦμεν ἄνευ μαλακίας → Our love of what is beautiful does not lead to extravagance; our love of the things of the mind does not makes us soft.
Russian (Dvoretsky)
ἄσφυκτον: τό спокойствие, покой (τῆς ψυχῆς Plut.).