Men are so simple and yield so readily to the desires of the moment that he who will trick will always find another who will suffer to be tricked. – Niccolo Machiavelli

Men ought either to be indulged or utterly destroyed, for if you merely offend them they take vengeance, but if you injure them greatly they are unable to retaliate, so that the injury done to a man ought to be such that vengeance cannot be feared. – Niccolo Machiavelli