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Este texto es una profunda interpretación del «tratado sobre la libertad» de Schelling, hecha por uno de los filósofos más relevantes del siglo xx En este volumen se recogen las clases y los seminarios que Heidegger impartió en 1941 sobre lo que él consideraba la cumbre de la metafísica del idealismo alemán: el pensamiento de Schelling relativo a la esencia de la libertad. Schelling define la libertad desde la distinción entre fundamento y existencia. La libertad no es ni el ser ni su manifestación, sino la diferencia entre ambos. Los eones son los despliegues existentes de sendas temporalidades de la naturaleza y del hombre como manifestaciones divinas, en los que puede tener lugar la libertad justamente en la medida en que se diferencian del fundamento. De una forma pedagógica y reflexiva, Heidegger explica la historia filosófica de los conceptos de fundamento y existencia, desde la escolástica medieval hasta la recepción de Ser y tiempo, pasando por Leibniz y, con especial detenimiento, por los existencialismos de Kierkegaard y Jaspers.
Martin Heidegger
Nació el 26 de septiembre de 1889 en Messkirch, Baden (Alemania). Cursó estudios de teología católica y después filosofía occidental en la Universidad de Friburgo, donde fue alumno de Edmund Husserl, el fundador de la fenomenología. Tras impartir clases en Marburgo, llegó a ser profesor de filosofía en Friburgo en 1928. En 1933 le nombran rector de la universidad de Friburgo y se afilia al partido nacionalsocialista (NSDAP). Renuncia al rectorado por discrepancias con el gobierno y deja de ocuparse de política. Muy influenciado por los presocráticos, por Kierkegaard, y por Nietzsche. Opinaba que la sociedad tecnológica moderna ha favorecido una actitud elemental y manipuladora que ha privado de sentido al ser y a la vida humana, un estado que llamaba nihilismo. Falleció en Messkirch el 26 de mayo de 1976.
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