It is under these circumstances that the voice of duty no longer speaks in men's hearts, and their rulers are obliged to substitute the cry of terror, or the lure of an apparent interest, of which they subsequently trick their creatures. In this situation they are compelled to have recourse to all the petty and despicable shifts which they call _rules of State_ and _mysteries of the cabinet_. All the vigour that is left in the government is used by its members in ruining and supplanting one another, while the public business is neglected, or is transacted only as personal interest requires and directs. In short, the whole art of those great politicians lies in so mesmerising those they stand in need of, that each may think he is labouring for his own interest in working for theirs: I say _theirs_ on the false supposition that it is the real interest of rulers to annihilate a people in order to make it subject, and to; ruin their own property in order to secure their possession of it. But when the citizens love their duty, and the guardians of the public authority sincerely apply themselves to the fostering of that love by their own example and assiduity, every difficulty vanishes; and government becomes so easy that it needs none of that art of darkness, whose blackness is its only mystery. Those enterprising spirits, so dangerous and so much admired, all those great ministers, whose glory is inseparable from the miseries of the people, are no longer regretted: public morality supplies what is wanting in the genius of the rulers; and the more virtue reigns, the less need there is for talent. Even ambition is better served by duty than by usurpation: when the people is convinced that its rulers are labouring only for its happiness, its deference saves them the trouble of labouring to strengthen their power: and history shows us, in a thousand cases, that the authority of one who is beloved over those whom he loves is a hundred times more absolute than all the tyranny of usurpers. This does not mean that the government ought to be afraid to make use of its power, but that it ought to make use of it only in a lawful manner. We find in history a thousand examples of pusillanimous or ambitious rulers, who were ruined by their slackness or their pride; not one who suffered for having been strictly just. But we ought not to confound negligence with moderation, or clemency with weakness. To be just, it is necessary to be severe; to permit vice, when one has the right and the power to suppress it, is to be oneself vicious.