With the names of Marx and Lassalle is associated the second great principle which, in 1848, definitely takes its place on the front of the European stage. This is the principle whose votaries confronted Lamartine at the Hôtel-de-Ville on the afternoon of the 25th February. The famous sentence, fortunate as Danton's call to arms, yet by its touch of sentimentality marking the distinction between September, 1792, and February, 1848, "The tricolour has made the tour of the world; the red flag but the tour of the Champ de Mars," has been turned into derision by subsequent events. The red flag has made the tour of the world as effectively as the tricolour and the eagles of Bonaparte. The origins of Communism, Socialism, Anarchism, Nihilism--for all four, however diverging or antagonistic in the ends they immediately pursue, spring from a common root--have been variously ascribed in France to the work of Louis Blanc, Fourier, Proudhon, or in Germany to Engels, Stirner, and Rodbertus, or to the countless secret societies which arose in Spain, Italy, Austria, and Russia, as a protest against the broken pledges of kings and governments after the Congress of Vienna. But the principle which informs alike the writings of individual thinkers and agitators, though deriving a peculiar force in the first half of the century from the doctrines and teachings of Fichte and Schleiermacher, is but the principle to which in all ages suffering and wrong have made their vain appeal--the responsibility of all for the misery of the many and the enduring tyranny of the few. Indignant at the spectacle, the Nihilist in orthodox Russia applies his destructive criticism to all institutions, civil, religious, political, and finding all hollow, seeks to overwhelm all in one common ruin. The Emancipation of 1861 was to the Nihilist but the act of Tyranny veiling itself as Justice. It left the serf, brutalized by centuries of oppression, even more completely than before to the mercy of the boyard and the exploiters of human souls. Michel Bakounine, Kropotkine, Stepniak, Michaelov, and Sophia Perovskaya, whose handkerchief gave the signal to the assassins of Alexander II, were but actualisations of Tourgenieff's imaginary hero Bazaroff, and for a time, indeed, Bazaroffism was in literary jargon the equivalent of Nihilism. If at intervals in recent years a shudder passes across Europe at some new crime, attempted or successful, of Anarchy, if Europe notes the singular regularity with which the crime is traced to Italy, and is perplexed at the absence of all the usual characteristics of conspiracy against society--for what known motives of human action, vanity or fear, hope or the gratification of revenge, can explain the silence of the confederates of Malatesta, and the blind obedience of the agents of his will?--if Europe is perplexed at this apparition of a terror unknown to the ancient world, the Italian sees in it but the operation of the law of responsibility. To the nameless sufferings of Italy he ascribes the temper which leads to the mania of the anarchist; and the sufferings of Italy in their morbid stage he can trace to the betrayal of Italy by Europe in 1816, in 1821, in 1831, in 1848, and supremely in 1856. As Europe has grown more conscious of its essential unity as one State system, diplomacy has wandered from such conceptions as the Balance of Power, through Gortschakoff's ironic appeal to the equality of kings, to the derisive theory of the Concert of Europe. But Communism and Anarchism have afforded a proof of the unity of Europe more convincing and more terrible, and full of sinister presage to the future.