El propósito central de este ensayo es mostrar que el debate actual entre el positivismo excluyente y el incluyente se alimenta de, al menos, tres ideas equivocadas acerca de la relación entre el lenguaje jurídico y el moral, la vinculación entre la ciencia y la práctica del derecho y la concepción de lo que es una ciencia normativa. Expuestos estos errores, esbozo una propuesta para entender estas relaciones, fundada en la concepción neokantiana-kelseniana de la ciencia jurídica. De esta doctrina derivo (...) que el lenguaje jurídico y la ciencia del derecho son, respectivamente, el fundamento conceptual del discurso moral y de la práctica jurídica. Asimismo, rechazo la definición que ve en el carácter normativo de la ciencia jurídica la presencia de juicios de valor. En consecuencia, el debate entre el positivismo incluyente y el excluyente debe ser abandonado o, al menos, reformulado. (shrink)

The theory of principles is multifaceted. Its initial expression contained an important argument against positivist theories of adjudication. As a legal theory, it fails in its effort to claim a structural difference between rules and principles. It also fails as a methodological theory that reduces adjudication to subsumption or balancing. It misunderstands itself when it is conceived as a doctrinal theory especially of fundamental rights. Its most promising aspect could be its contribution to a more comprehensive theory of legal argumentation.

The essay discusses the import of the separability thesis both for legal positivism and for contemporary legal practice. First, the place of the separability thesis in legal positivism will be explored, distinguishing between “standard positivism” and “post‐Hartian positivism.” Then I will consider various kinds of relations between law and morality that are worthy of jurisprudential interest, and explore, from a positivist point of view, what kind of relations between law and morality must be rejected, what kind of such relations should (...) be taken into account, and what kind of such relations are indeed of no import at all. The upshot of this analysis consists in highlighting the distinction between two different dimensions of legal validity (formal validity and material validity respectively), and in pointing out that the positivist separability thesis can apply to formal validity only. On the other hand, when the ascertainment of material validity is at stake, some form of moral reasoning may well be involved (here and now, it isnecessarilyinvolved). The essay concludes with some brief remarks on the persisting importance of the positivist jurisprudential project. (shrink)