For us, Marxism is always open because there are always new experiences, there are always new facts, including facts about the past, which have to be incorporated in the corpus of scientific socialism.

Mistakes in themselves are unavoidable.

The only conclusion you can draw from the real historical movement is that by and large, in day-to-day life, what Lenin called trade union consciousness dominates the working class. I would call it elementary class consciousness of the working class.

Factions are a sign of illness in a party.

There are no conditions in which we subordinate the interests of the class as a whole to the interests of any sect, any chapel, any separate organization.

For Marx, 'pure' economic theory, that is economic theory which abstracts from a specific social structure, is impossible.

For us, Marxism is always open because there are always new experiences, there are always new facts, including facts about the past, which have to be incorporated in the corpus of scientific socialism.