“This statement says that not all those gathered round the journal Pod Znamenem Marksizma are Communists but that they are all consistent materialists. I think that this alliance of Communists and non-Communists is absolutely essential and correctly defines the purposes of the journal. One of the biggest and most dangerous mistakes made by Communists (as generally by revolutionaries who have successfully accomplished the beginning of a great revolution) is the idea that a revolution can be made by revolutionaries alone. On the contrary, to be successful, all serious revolutionary work requires that the idea that revolutionaries are capable of playing the part only of the vanguard of the truly virile and advanced class must be understood and translated into action. A vanguard performs its task as vanguard only when it is able to avoid being isolated from the mass of the people it leads and is able really to lead the whole mass forward. Without an alliance with non-Communists in the most diverse spheres of activity there can be no question of any successful communist construction.
This also applies to the defence of materialism and Marxism, which has been undertaken Pod Znamenem Marksizma.Fortunately, the main trends of advanced social thinking in Russia have a solid materialist tradition. Apart from G. V. Plekhanov, it will be enough to mention Chernyshevsky, from whom the modern Narodniks (the Popular Socialists, Socialist-Revolutionaries, etc.) have frequently retreated in quest of fashionable reactionary philosophical doctrines, captivated by the tinsel of the so-called last word in European science, and unable to discern beneath this tinsel some variety of servility to the bourgeoisie, to bourgeois prejudice and bourgeois reaction.
At any rate, in Russia we still have — and shall undoubtedly have for a fairly long time to come — materialists from the non-communist camp, and it is our absolute duty to enlist all adherents of consistent and militant materialism in the joint work of combating philosophical reaction and the philosophical prejudices of so-called educated society.”
-Vladimir Lenin, “On The Significance Of Militant Materialism”