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En el centro de la filosofía del derecho de Robert Alexy se halla la tesis de la doble naturaleza del derecho: su dimensión real y su dimensión ideal. Mientras que la dimensión real se expresa en los elementos de la positividad autoritativa y de la eficacia social, ligados con la decisión y la coerción, la dimensión ideal se define a través de la corrección de contenido y de procedimiento que, esencialmente, incluye la corrección moral en forma de justicia. El positivismo jurídico asocia el derecho exclusivamente con su dimensión real. Pero, tan pronto como se añade la corrección moral, el cuadro cambia radicalmente. Surge un concepto de derecho no positivista. La tesis de la doble naturaleza implica por tanto el no-positivismo jurídico. Esta tesis, muy abstracta, adquiere un contenido específico si se desarrolla en la dirección de una teoría completa del sistema jurídico. El punto arquimédico de dicha teoría completa es la tesis de que el derecho erige necesariamente una pretensión de corrección. Los ensayos de este libro tratan, de forma sistemática, los distintos elementos en los que se explicita dicha pretensión, constituyendo así el mejor compendio de la filosofía jurídica de su autor y una útil introducción a la misma.
Robert Alexy
Robert Alexy es Catedrático de Derecho Público y Filosofía del Derecho en la Universidad Christian Albrecht de Kiel (Alemania). Es autor de la Teoría de la argumentación jurídica (su tesis doctoral) y la Teoría de los derechos fundamentales (su escrito de habilitación). Entre 1994 y 1998 fue presidente de la sección alemana de la Asociación Internacional de Filosofía del Derecho y Filosofía Social (IVR). En 1992 publicó su libro El concepto y la validez del derecho, cuyas ideas aparecen desarrolladas
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