Let them hate, if only they fear.

[Oderint, dum metuant.]

Lucius Accius (170-c. 86 BC) Roman tragic poet, literary scholar [a.k.a. Lucius Attius]

“Atreus”

Quoted in Cicero, De officiis, 1.28 [tr. Miller (1913)]. Also quoted in Seneca, Dialogues, Books 3-5 "De Ira", I, 20, 4 ("Let them hate, so long as they fear.").