The Prince

by Niccolò Machiavelli

But Pertinax was created emperor against the wishes of the soldiers, who, being accustomed to live licentiously under Commodus, could not endure the honest life to which Pertinax wished to reduce them; thus, having given cause for hatred, to which hatred there was added contempt for his old age, he was overthrown at the very beginning of his administration. And here it should be noted that hatred is acquired as much by good works as by bad ones, therefore, as I said before, a prince wishing to keep his state is very often forced to do evil; for when that body is corrupt whom you think you have need of to maintain yourself—it may be either the people or the soldiers or the nobles—you have to submit to its humours and to gratify them, and then good works will do you harm.