The article was written by Lenin in German and published in January 1916 in the first issue of the theoretical organ of the Zimmerwald Left, the magazine Vorbote (Herald ). Earlier, Lenin had written an article in Russian under the same title; it was first
published in the magazine Proletarskaya Revolutsia (Proletarian Revolution ) No. 5 (28) in 1924, and is included in Volume 21 of the present edition, where the text is not quite identical with the one in Vorbote. [Transcriber's Note: See Lenin's "Opportunism, and the Collapse of the Second International". -- DJR]
The Quadruple Alliance -- the imperialist alliance of Britain, France, Russia and Italy, which in 1915 withdrew from the Dreibund and joined the Triple Entente.
An opportunist trend in German and International Social-Democracy hostile to Marxism. It emerged in Germany at the end of the 19th century, and got its name from Eduard Bernstein, a German Social-Democrat, who tried to revise Marx's revolutionary theory on the lines of bourgeois liberalism. Among his supporters in Russia were the legal Marxists, the Economists, the Bund and the Mensheviks.
Sozialistische Monatshefte (Socialist Monthly ) -- the chief organ of the German Social-Democratic opportunists and an organ of international opportunism; during the First World War it took a social-chauvinist stand; published in Berlin from 1897 to 1933.
Members of the Fabian Society, a British reformist organisation founded in 1884; It got its name from the Roman commander, Fabius Maximus (d.- 203 B.C.), surnamed Cunctator, that is, the Delayer, for his tactics of harassing Hannibal's army without risking a pitched battle. Most of the Society's members were bourgeois intellectuals: scholars, writers, politicians (such as Sidney and Beatrice Webb, Bernard Shaw, Ramsay MacDonald, etc.); they denied the need for the class struggle of the proletariat and a socialist revolution, and insisted that the transition from capitalism to socialism lay only through petty reform and a gradual transformation of society. Lenin said it was "an extremely opportunist trend -- (see present edition, Vol. 13, p.358 [Transcriber's Note: See Lenin's The Agrarian Programme of Social-Democracy in the First Russian Revolution, 1905-07, chapter IV, section 7. --