This double nature of justice gives us the definitive basis of all the demonstrations in Chapters II., III., and IV. On the one hand, the idea of JUSTICE being identical with that of society, and society necessarily implying equality, equality must underlie all the sophisms invented in defence of property; for, since property can be defended only as a just and social institution, and property being inequality, in order to prove that property is in harmony with society, it must be shown that injustice is justice, and that inequality is equality,--a contradiction in terms. On the other hand, since the idea of equality--the second element of justice--has its source in the mathematical proportions of things; and since property, or the unequal distribution of wealth among laborers, destroys the necessary balance between labor, production, and consumption,--property must be impossible. All men, then, are associated; all are entitled to the same justice; all are equal. Does it follow that the preferences of love and friendship are unjust? This requires explanation. I have already supposed the case of a man in peril, I being in a position to help him. Now, I suppose myself appealed to at the same time by two men exposed to danger. Am I not allowed--am I not commanded even--to rush first to the aid of him who is endeared to me by ties of blood, friendship, acquaintance, or esteem, at the risk of leaving the other to perish? Yes. And why? Because within universal society there exist for each of us as many special societies as there are individuals; and we are bound, by the principle of sociability itself, to fulfil the obligations which these impose upon us, according to the intimacy of our relations with them. Therefore we must give our father, mother, children, friends, relatives, &c., the preference over all others. But in what consists this preference? A judge has a case to decide, in which one of the parties is his friend, and the other his enemy. Should he, in this instance, prefer his INTIMATE ASSOCIATE to his DISTANT ASSOCIATE; and decide the case in favor of his friend, in spite of evidence to the contrary? No: for, if he should favor his friend's injustice, he would become his accomplice in his violation of the social compact; he would form with him a sort of conspiracy against the social body. Preference should be shown only in personal matters, such as love, esteem, confidence, or intimacy, when all cannot be considered at once. Thus, in case of fire, a father would save his own child before thinking of his neighbor's; but the recognition of a right not being an optional matter with a judge, he is not at liberty to favor one person to the detriment of another.