"Mao’s understanding of the Marxist theory of social change has frequently been misrepresented. It is often suggested that Mao turned his back on the materialist philosophy of Marxism, glorifying rather the capacity of ideas to transform society. He is thus depicted as an “idealist” or “voluntarist,” one who regarded the ideological-political superstructure of society and struggles within it as the primary source of social change; the economic base, which Marx had attributed with this role, became in Mao’s mind pliantly malleable to pressures for change from the superstructure. Yet, a careful exploration of this dimension of his thought does not bear out this interpretation. While his views on the capacity of politics, ideology, and culture to contribute to social change did go beyond that of a mechanical and reductionist materialism and did vary, his general perspective remained an economists one; he continued to regard the economic foundation of society—forces and relations of production—as the ultimately determining factor in history."
January 1, 1970
https://en.wikiquote.org/wiki/Mao_Zedong