ὃν οὐ τύπτει λόγος οὐδὲ ῥάβδος → if words don't get through, neither a beating will | if the carrot doesn't work, the stick will not work either | whom words do not strike, neither does the rod
-ου, ὁ profundidad, fondo, Cyran.1.2.8, cf. plu. Hsch.