The following quotation from the same work, which provides for a more precise understanding of the new doctrine, was denounced in its time by Stalinist internationalists for clearly contradicting the then prevailing theory of "construction of socialism in one country": ""The anationalists combat all that is national: national languages and cultures, national customs and traditions. For them, Esperanto is their primary language and they consider national languages to be merely auxiliary. They refuse to participate in any national struggle and they acknowledge as necessary and advantageous to the exploited class only class struggle that seeks to eliminate classes, nationalities and all forms of exploitation."" (ibid.)