ὀργιστέον
From LSJ
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
English (LSJ)
A one must be angry, D.21.123, Arist.EN1109b16, M.Ant. 5.22.
Greek (Liddell-Scott)
ὀργιστέον: ῥηματ. ἐπίθ. τοῦ ὀργίζομαι, δεῖ ὀργίζεσθαι, Δημ. 555. 7, Ἀριστ. Ἠθικ. Νικ. 2. 9, 7.