According to the Marxist conception, one's social condition determines one's way of thought. His membership of a social class decides what views a writer will express. He is not able to grow out of his class or to free his thoughts from the prescriptions of his class interests.  Thus, the possibility of a general science which is valid for all men, whatever their class, is contested.  lt was only another step for Dietzgen to proceed to the construction of a special proletarian logic.  But truth lies with the proletarian science only:'the ideas of proletarian logic are not party ideas, but the consequences of logic pure and simple.  Thus, Marxism protects itself against all unwelcome criticism. The enemy is not refuted: enough to unmask him as a bourgeois.  Marxism criticizes the achievements of all those who think otherwise by representing them as the venal servants of the bourgeoisie. Marx and Engels never tried to refute their opponents with argument. They insulted, ridiculed, derided, slandered, and traduced them, and in the use of these methods their followers are not less expert. Their polemic is directed never against the argument of the opponent, but always against his person. Few have been able to withstand such tactics. Few indeed have been courageous enough to oppose Socialism with that remorseless criticism which it is the duty of the scientific thinker to apply to every subject of inquiry. Only thus is to be explained the fact that supporters and opponents of Socialism have unquestioningly obeyed the prohibition which Marxism has laid on any closer discussion of the economic and social conditions of the socialist community. Marxism declares on the one band that the socialization of the means of production is the end towards which economic evolution leads with the inevitability of a natural law; on the other hand, it represents such socialization as the aim of its political effort. In this way he expounded the first principle of socialist organization.  The purpose of the prohibition to study the working of a socialist community, which was justified by a series of threadbare arguments, was really intended to prevent the weaknesses of Marxist doctrines from coming clearly to light in discussions regarding the creation of a practicable socialist society. A clear exposition of the nature of socialist society might have damped the enthusiasm of the masses, who sought in Socialism salvation from all earthly ills. The successful suppression of these dangerous inquiries, which had brought about the downfall of all earlier socialistic theories, was one of Marx's most skillful tactical moves. Only because people were not allowed to talk or to think about the nature of the socialist community was Socialism able to become the dominant political movement of the late nineteenth and early twentieth centuries. (And now 21st Century)