Resumo

RUIZ MANERO, Juan. On Ferrajoli's Kelsen. Isonomía [online]. 2015, n.43, pp.197-210. ISSN 1405-0218.

The purpose of this paper is to give an account of the critiques that Ferrajoli addresses to Kelsen in his latest -still unpublished- book, Diritto e lógica. Dieci aporie nell'opera di Hans Kelsen, and to make some criticism of the theses held in it by Ferrajoli himself. Major criticisms that the author believes should be addressed in this regard to Ferrajoli affect the purely internal nature of Ferrajoli's approach to the law, the always debatable character, never true or false that, according to Ferrajoli, interpretive statements have, and the incompatibility which, according to the author, exists between the ambitions of Ferrajoli's theory and the limitations imposed on it by its anchoring in ethical non-cognitivism.

Palavras-chave : Ferrajoli; Kelsen; theory of legal system; theory of legal norm; law and logic.