Language is as old as consciousness, language is practical, real consciousness that exists for other men as well, and only therefore does it also exist for me; language, like consciousness, only arises from the need, the necessity, of intercourse with other men.

Accordingly the newspaper was popular with the broad masses of the common working class of the United States. At the same time Marx stressed that capitalism was unstable and prone to periodic crises. No longer a secret society the Communist League wanted to make aims and intentions clear to the general public rather than hiding its beliefs as the League of the Just had been doing.

Marx is typically cited with Émile Durkheim and Max Weber as one of the three principal architects of modern social science. He argued that under socialism society would be governed by the working class in what he called the "dictatorship of the proletariat" the "workers' state" or "workers' democracy". His ideas played a significant role in the establishment of the social sciences and the development of the socialist movement.