ἐπὶ ξυροῦ γὰρ ἀκμῆς ἔχεται ἡμῖν τὰ πρήγματα → our affairs are balanced on a razor's edge, our affairs are set upon the razor's edge
ῆς (ἡ) :Psyché, n. de f. myth. (càd l'Âme personnifiée).Étymologie: ψυχή.