He who wishes to be obeyed must know how to command - Niccolò Machiavelli

Any man who tries to be good all the time is bound to come to ruin among the great number who are not good. Hence a prince who wants to keep his authority must learn how not to be good, and use that knowledge, or refrain from using it, as necessity requires.

Moreover, a Republic trusting to her own forces, is with greater difficulty than one which relies on foreign arms brought to yield obedience to a single citizen. Rome and Sparta remained for ages armed and free. The Swiss are at once the best armed and the freest people in the world.

In general you must either pamper people or destroy them; harm them just a little and they’ll hit back; harm them seriously and they won’t be able to. So if you’re going to do people harm, make sure you needn’t worry about their reaction.