ἀπὸ λεπτοῦ μίτου τὸ ζῆν ἤρτηται → life hangs by a thin thread
subs.
Ar. and P. λέμμα, τό (Plat., Tim. 76A).
A coating of ice had formed not strong enough to give a foothold: P. κρύσταλλος ἐπεπήγει οὐ βέβαιος ὥστε ἐπελθεῖν (Thuc. 3, 23).