The old despotic policy which made the Poles its prey had two adversaries,--the spirit of English liberty, and the doctrines of that revolution which destroyed the French monarchy with its own weapons; and these two contradicted in contrary ways the theory that nations have no collective rights. At the present day, the theory of nationality is not only the most powerful auxiliary of revolution, but its actual substance in the movements of the last three years. This, however, is a recent alliance, unknown to the first French Revolution. The modern theory of nationality arose partly as a legitimate consequence, partly as a reaction against it. As the system which overlooked national division was opposed by liberalism in two forms, the French and the English, so the system which insists upon them proceeds from two distinct sources, and exhibits the character either of 1688 or of 1789. When the French people abolished the authorities under which it lived, and became its own master, France was in danger of dissolution: for the common will is difficult to ascertain, and does not readily agree. "The laws," said Vergniaud, in the debate on the sentence of the king, "are obligatory only as the presumptive will of the people, which retains the right of approving or condemning them. The instant it manifests its wish the work of the national representation, the law, must disappear." This doctrine resolved society into its natural elements, and threatened to break up the country into as many republics as there were communes. For true republicanism is the principle of self-government in the whole and in all the parts. In an extensive country, it can prevail only by the union of several independent communities in a single confederacy, as in Greece, in Switzerland, in the Netherlands, and in America; so that a large republic not founded on the federal principle must result in the government of a single city, like Rome and Paris, and, in a less degree, Athens, Berne, and Amsterdam; or, in other words, a great democracy must either sacrifice self-government to unity, or preserve it by federalism.