"With such a universal prevalence of idealism it is not surprising that Spinoza has long since been enlisted in the camp of the idealists. Unfortunately, there are even some Marxists who defend the tradition of the historians of philosophy, despite the fact that Feuerbach, to some extent Engels, and more recently Plekhanov have done a great deal in explaining Spinoza's materialistic views. We still have to struggle against this idealistic tradition, to prove to comrades from our own midst that Spinoza is not to be ranked among the idealists. In the last few years, two 'fronts' have been formed in connection with the treatment of Hegelian dialectics and Spinoza's world-conception: the Hegelian front and the Spinozistic front. The disagreements and disputes which are going on in our own midst focus on two basic points: the disputes about Hegel touch the foundations of our method, the differences of opinion with regard to Spinoza concern our world‑view and involve the conception of materialism itself. But, since method and world‑view are not separate from one another, the disputes and disagreements in the first area—those concerning method—are indissolubly connected with the disputes in the second area—those concerning world‑view. I shall not dwell further on this point; I wished merely to indicate the extent to which these two fronts are connected."