You know I hit a gem while reading Machiavelli's The Prince I came upon this “it is much safer to be feared than loved because ...love is preserved by the link of obligation which, owing to the baseness of men, is broken at every opportunity for their advantage; but fear preserves you by a dread of punishment which never fails.”
I've read a lot of ancient historians books like Livy, Polybius, etc, and I remember Polybius talking about Lucius Aemilanus Paulus Macedonicus, and his conquest over Macedon and Perseus, the son of Philip V, in the 3rd Macedon War.
After Paulus conquered Macedon, he made a statement to the Greeks. He let his men run ravage over Epirus. They killed, raped, pillaged, and enslaved every man, woman, and child in around 70 towns in Epirus. After that Greece would never again revolt against Rome.
Machiavelli quoted Polybius given the quote above. It's interesting seeing the quotes of someone fit with something I've read so long ago, and hearing that quote, I was wondered who Machiavelli was talking about. Good stuff.