The author intends to show how the criticism of Maurizio Ferraris to the correspon-dence of ontology and epistemology, which developed in the modern age, does not consider that the Thought of the transcendentalism is not the thought of the everyday language but rather a limiting concept. Therefore, the fair criticism to the pragmatism and to the post-modernism in the name of the “reality principle” cannot involve the ideas of the so-called idealists (Kant, Hegel, Gentile, Croce): to conceive the reality as history, as the idealists do, has important ethical implications.