Niccolò Machiavelli said this quote

And here comes in the question whether it is better to be loved rather than feared, or feared rather than loved. It might perhaps be answered that we should wish to be both; but since love and fear can hardly exist together, if we must choose between them, it is far safer to be feared than loved.

~ Niccolò Machiavelli

The first method for estimating the intelligence of a ruler is to look at the men he has around him.

~ Niccolò Machiavelli

Because there are three classes of intellects: one which comprehends by itself; another which appreciates what others comprehend; and a third which neither comprehends by itself nor by the showing of others; the first is the most excellent, the second is good, the third is useless.

~ Niccolò Machiavelli

Men ought either to be well treated or crushed, because they can avenge themselves of lighter injuries, of more serious ones they cannot; therefore the injury that is to be done to a man ought to be of such a kind that one does not stand in fear of revenge.

~ Niccolò Machiavelli