Only if you bring together the experience of the concrete struggles conducted by the real masses in the three sectors of the world (which are also called the three sectors of world revolution), then you have an overall, correct view of world reality.

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

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

Socialist democracy is not, a luxury and its need is not limited to the most advanced industrial countries.

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.

Revolution is not a goal in itself.

Precisely because Marx was convinced that the cause of the proletariat was of decisive importance for the whole future of mankind, he wanted to create for that cause not a flimsy platform of rhetorical invective or wishful thinking, but the rock-like foundation of scientific truth.