In his reply Mill reiterates and defends the arguments advanced in his Essay on Government: all men—including rulers and representatives—are moved mainly if not exclusively by considerations of self-interest, and therefore the only security for good government is to be found in making the interests of representatives identical with those of their constituents. But, unlike the cool, detached, and ostensibly deductive Essay on Government, Mill’s reply contains a good deal of vitriol. He writes like a schoolmaster who, having lost all patience with a slow-witted pupil, is content to ridicule him before his cleverer classmates. The sight is not a pretty one, and shows James Mill at his polemical worst. Whether, or to what extent, such a splenetic rejoinder could suffice as a refutation is surely questionable.