Like Novak, Moreno’s explanation “of logic in general and of Marxist logic in particular starts from and is aimed at political-revolutionary activity.” He argues that there can be no Marxism without taking into account scientific development, especially that of modern psychology and epistemology, sciences that Piaget has revolutionized. Thus he comes out in defense of Engels against the attacks of Della Volpe and Sartre to get closer to the true thought of Marx. He makes a devastating criticism of Della Volpe himself, Leva Sartas, Althusser, Godelier, Mao Tsé Tung, etc., who, in addition to not taking into account the close relationship of Marxism with modern sciences, ignore the law of uneven and combined development, suggested already by Marx formulated by Trotsky and described by Piaget.
