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
[Seite 1310] mit schönen Flüssen, ὕδατος νοτίς, das schöne Flußnaß, Eur. Phoen. 648.
