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
phyllon: i, n., = φύλλον,I a plant, called also leucacantha, Plin. 22, 16, 18, § 40.