According to the Marxist theoretician and revolutionary socialist Vladimir Lenin, "the principal content of Marxism" was "Marx's economic doctrine". Marx believed that the capitalist bourgeoisie and their economists were promoting what he saw as the lie that "the interests of the capitalist and of the worker are [...] one and the same". Thus, he believed that they did this by purporting the concept that "the fastest possible growth of productive capital" was best not only for the wealthy capitalists but also for the workers because it provided them with employment.