Peisander, fr. 8 (Stobaeus 3.12.6)

“It is not shameful to proclaim even a lie publicly to save a life.”

οὐ νέμεσις καὶ ψεῦδος ὑπὲρ ψυχῆς ἀγορεύειν.

Peisander, you ask? Not the Spartan general or the Severan era poet.

(An epic poet, perhaps?)