ἔγνω δὲ φώρ τε φῶρα καὶ λύκος λύκον → the thief knows the thief and the wolf knows the wolf, and thief knows thief and wolf his fellow wolf, set a thief to catch a thief
rĕmĕdĭātĭo: ōnis, f. id.,I a healing, remedying, Scrib. Comp. 11.