There is nothing of all this in political society, in which the chief is so far from having any natural interest in the happiness of the individuals, that it is not uncommon for him to seek his own in their misery. If the magistracy is hereditary, a community of men is often governed by a child. If it be elective, innumerable inconveniences arise from such election; while in both cases all the advantages of paternity are lost. If you have but a single ruler, you lie at the discretion of a master who has no reason to love you: and if you have several, you must bear at once their tyranny and their divisions. In a word, abuses are inevitable and their consequences fatal in every society where the public interest and the laws have no natural force, and are perpetually attacked by personal interest and the passions of the ruler and the members.

Although the functions of the father of a family and those of the chief magistrate ought to make for the same object, they must do so in such different ways, and their duty and rights are so essentially distinct, that we cannot confound them without forming very false ideas about the fundamental laws of society, and falling into errors which are fatal to mankind. In fact, if the voice of nature is the best counsellor to which a father can listen in the discharge of his duty, for the Magistrate it is a false guide, which continually prevents him from performing his, and leads him on sooner or later to the ruin of himself and of the State, if he is not restrained by the most sublime virtue. The only precaution necessary for the father of a family is to guard himself against depravity, and prevent his natural inclinations from being corrupted; whereas it is these themselves which corrupt the Magistrate. In order to act aright, the first has only to consult his heart; the other becomes a traitor the moment he listens to his. Even his own reason should be suspect to him, nor should he follow any rule other than the public reason, which is the law. Thus nature has made a multitude of good fathers of families; but it is doubtful whether, from the very beginning of the world, human wisdom has made ten men capable of governing their peers.

From all that has just been said, it follows that public economy, which is my subject, has been rightly distinguished from private economy, and that, the State having nothing in common with the family except the obligations which their heads lie under of making both of them happy, the same rules of conduct cannot apply to both. I have considered these few lines enough to overthrow the detestable system which Sir Robert Filmer has endeavoured to establish in his Patriarcha; a work to which two celebrated writers have done too much honour in writing books to refute it. Moreover, this error is of very long standing; for Aristotle himself thought proper to combat it with arguments which may be found in the first book of his Politics.

I must here ask my readers to distinguish also between public economy, which is my subject and which I call government, and the supreme authority, which I call Sovereignty; a distinction which consists in the fact that the latter has the right of legislation, and in certain cases binds the body of the nation itself, while the former has only the right of execution, and is binding only on individuals.

I shall take the liberty of making use of a very common, and in some respects inaccurate, comparison, which will serve to illustrate my meaning.

The body politic, taken individually, may be considered as an organised, living body, resembling that of man. The sovereign power represents the head; the laws and customs are the brain, the source of the nerves and seat of the understanding, will and senses, of which the Judges and Magistrates are the organs: commerce, industry, and agriculture are the mouth and stomach which prepare the common subsistence; the public income is the blood, which a prudent economy, in performing the functions of the heart, causes to distribute through the whole body nutriment and life: the citizens are the body and the members, which make the machine live, move and work; and no part of this machine can be damaged without the painful impression being at once conveyed to the brain, if the animal is in a state of health.

The life of both bodies is the self common to the whole, the reciprocal sensibility and internal correspondence of all the parts. Where this communication ceases, where the formal unity disappears, and the contiguous parts belong to one another only by juxtaposition, the man is dead, or the State is dissolved.

The body politic, therefore, is also a moral being possessed of a will; and this general will, which tends always to the preservation and welfare of the whole and of every part, and is the source of the laws, constitutes for all the members of the State, in their relations to one another and to it, the rule of what is just or unjust: a truth which shows, by the way, how idly some writers have treated as theft the subtlety prescribed to children at Sparta for obtaining their frugal repasts, as if everything ordained by the law were not lawful.

It is important to observe that this rule of justice, though certain with regard to all citizens, may be defective with regard to foreigners. The reason is clear. The will of the State, though general in relation to its own members, is no longer so in relation to other States and their members, but becomes, for them, a particular and individual will, which has its rule of justice in the law of nature. This, however, enters equally into the principle here laid down; for in such a case, the great city of the world becomes the body politic, whose general will is always the law of nature, and of which the different States and peoples are individual members. From these distinctions, applied to each political society and its members, are derived the most certain and universal rules, by which we can judge whether a government is good or bad, and in general of the morality of all human actions.

Every political society is composed of other smaller societies of different kinds, each of which has its interests and its rules of conduct: but those societies which everybody perceives, because they have an external and authorised form, are not the only ones that actually exist in the State: all individuals who are united by a common interest compose as many others, either transitory or permanent, whose influence is none the less real because it is less apparent, and the proper observation of whose various relations is the true knowledge of public morals and manners. The influence of all these tacit or formal associations causes, by the influence of their will, as many different modifications of the public will. The will of these particular societies has always two relations; for the members of the association, it is a general will; for the great society, it is a particular will; and it is often right with regard to the first object, and wrong as to the second. An individual may be a devout priest, a brave soldier, or a zealous senator, and yet a bad citizen. A particular resolution may be advantageous to the smaller community, but pernicious to the greater. It is true that particular societies being always subordinate to the general society in preference to others, the duty of a citizen takes precedence of that of a senator, and a man's duty of that of a citizen: but unhappily personal interest is always found in inverse ratio to duty, and increases in proportion as the association grows narrower, and the engagement less sacred; which irrefragably proves that the most general will is always the must just also, and that the voice of the people is in fact the voice of God.