"Let us define what we mean by Marxism. Is it the doctrine of Marx and Engels? Or is it the movements to which that doctrine has given birth, and which, rightly or wrongly, claim to be Marxist? To what extent are these movements actually inspired by Marxism, and to what extent have they caused it to develop, sometimes reforming, sometimes deforming it? Are these movements still really Marxist in the classic sense? Or do perhaps both friends and enemies of Marxism often harbour a distorted conception of Marx’s original theories? We must therefore ask ourselves whether the so-called crisis of Marxism is not in large measure a crisis of differing posthumous interpretations of Marxism. Karl Marx died in 1883 and Friedrich Engels in 1895. Although a number of their followers have developed their doctrines and provided important supplementary analyses of the modifications experienced by capitalism in the course of the twentieth century, the results of these labours have hardly affected the movement as a whole. In fact, as the movement grew in size, the assimilation even of the ideas of Marx and Engels themselves, which were naturally better known, became slower, more fragmentary and more superficial. In accordance with historical conditions which obviously differed considerably as between country and country, each movement took what best suited it from the original doctrine, and applied its choice (very rarely the Marxist method itself) to its own particular situation."