But Plechanov[1]--like Marx himself--set reality above dogma, and regarded movement as of infinitely greater importance than theory. The Mensheviki wanted to convene a great mass convention of representatives of the industrial proletariat during the summer of 1906. "It is a class movement," they said, "not a little sectarian movement. How can there be a _class_ movement unless the way is open to all the working class to participate?" Accordingly, they wanted a convention to which all the factory-workers would be invited to send representatives. There should be no doctrinal tests, the sole qualification being membership in the working class. It did not matter to the advocates of this policy whether a man belonged to the Social Democratic party or to any party; whether he called himself a revolutionist or anything else. It was, they said, a movement of the working class, not the movement of a sect within the working class. They knew, of course, that in such a great mass movement there would probably be some theoretical confusion, more or less muddled thinking. They recognized, too, that in the great mass convention they proposed some Social Democratic formulations might be rejected and some others adopted which did not accord with the Marxian doctrines. But, quoting Marx to the effect that "One step of real movement is worth a thousand programs," they contended that if there was anything at all in the Marxian theory of progress through class struggles, and the historic rule of the working class, it must follow that, while they might make mistakes and go temporarily astray, the workers could not go far wrong, their class interests being a surer guide than any amount of intellectualism could produce. Lenine and his friends, the Bolsheviki, bitterly opposed all this reasoning and took a diametrically opposite position upon every one of the questions involved. They absolutely opposed any sort of co-operation with bourgeois parties of any kind, for any purpose whatever. No matter how progressive a particular bourgeois party might be, nor how important the reform aimed at, they believed that Social Democrats should remain in "splendid isolation," refusing to make any distinction between more liberal and less liberal, progressive and reactionary, groups in the bourgeoisie. Trotzky, who did not at first formally join the Bolsheviki, but was a true Bolshevik in his intellectual convictions and sympathies, fully shared this view.