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.

Periodically, the workers do revolt against bourgeois society, not by a hundred, five hundred, or a thousand, but by the millions.

The more workers you have in your organization, the better you are implanted in the working class, the more likely you are to come up with the concrete problems of the class.

Factions are a sign of illness in a party.

Mistakes in themselves are unavoidable.

And you cannot have a socialist revolution commandeered from the top, ordered around by some omniscient leader or group of leaders

There is a process of social and of political differentiation going on in the real working class all the time.