Hans Leisegang

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Hans Leisegang (born March 13, 1890 in Blankenburg (Thuringia) , † April 5, 1951 in Berlin ) was a German philosopher , physicist and author .

Career

Honor grave, Hüttenweg 47, in Berlin-Dahlem

During his studies Leisegang became a member of the Association of German Students Strasbourg-Hamburg and the Association of German Students Leipzig . Leisegang obtained his doctorate in 1911. phil. in Strasbourg with the work "The space theory in later Platonism, especially with Philo and the Neoplatonists" (published 1912). In 1920 he received his habilitation and the license to teach philosophy, education and psychology at the University of Leipzig . He became associate professor there (1925); then full professor in Jena (1930). Leisegang was relieved of his professorship several times for political reasons. His statement in 1934 on the Jena market square about Hitler's funeral speech at Hindenburg that it was a disparagement of Hindenburg " that a corporal gave the funeral speech to the General Field Marshal " was followed by his suspension and imprisonment (1934/35).

Leisegang then studied physics and obtained his doctorate in 1942. rer. nat. and worked as a technical physicist. In 1945 he was appointed professor of philosophy at the University of Jena and was dismissed in 1948 because of his criticism of the Soviet occupation zone . He then went to West Berlin and was appointed professor of philosophy at the Free University of Berlin . Since 1948 he was a member of the Saxon Academy of Sciences . He died of heart disease at the age of 61.

Leisegang was buried in the Dahlem forest cemetery in Berlin-Dahlem . The grave was dedicated to the State of Berlin as an honorary grave from 1994 to 2015 .

Works

After Folkert Sigert, Leisegang's most important work is the collection of the "Indices ad Philonis Alexandrini opera", an index for the six-volume Urtext edition of Philons of Alexandria, written in Greek and not yet translated, and published in two volumes . Leisegang began with religious-philosophical work and studies on Hellenistic thinking, and then turned to the analysis of "forms of thought" in Aristotle's Plato, Kant, Hegel, etc. He also wrote books about Dante, Luther, Lessing and Goethe.

"The Gnosis"

The work " Die Gnosis " (1924) represents, in addition to Hans Jonas' : " Gnosis and Late Antique Spirit " (1930), a further introduction to the Gnostic worldview, in which Leisegang shows this systematically starting with Simon Magus up to the western Gnosis of Pistis Sophia . He refers to cross connections to the Old and New Testament , whereby he concentrates on important Gnostic sects. The book does not aim to be a comprehensive study. Even if his concept of gnosis - "Gnosis is knowledge of the supersensible" - is no longer shared by modern gnosis research and the findings of Nag Hamadi research are not yet available, the question asked about "evil", "gnostic thinking" and its manifestations, current. Its symbolic derivations, the list of Gnostic terms and its interpretations of the sources remain valuable as an introduction to Gnosis.

Ways of thinking

Leisegang's book "Denkformen" was published in 1928 and in a second, modified edition in 1951. In it, he tackles the problem of the various, sometimes contradicting systems of philosophy. He notes that competing systems continue to exist side by side and do not, as Hegel put it , become superfluous through the progression of the world spirit towards a "form of thought". Leisegang concludes that there are different logics and examines the thinking of philosophers on their logic. Leisegang writes about his term: “By a form of thinking I understand the coherent whole of the laws of thinking” (15). It is important to him that "the way of thinking is in a fixed, organic connection with the worldview" (61). Leisegang depicts the various forms of thought movements by using graphic means. He speaks of the "train of thought" by which, for example, the circular movement of thought of "A" for "everything" and again of "everything" to "A" or "from life to death to life" or the beginning of John's prologue is meant . He continues the graphical assignment to the "circle of circles", the "conceptual pyramid", the "Euclidean-mathematical" thought movement, which literally means linear thinking, etc. He sees the result of his study in the still current one The problem that a form of thought is elevated to the actual form of thought: "The great one-sided world views have all emerged from an unjustified transference." (447)

Appreciation

On the occasion of the 50th anniversary of the philosopher's death, the Institute of Philosophy at the University of Jena and the Collegium Europaeum Jenense organized a memorial colloquium on April 4, 2001. "The Gnosis" and "Introduction to Philosophy" are published by his books. The works “Philon Index”, “Denkformen” and “Meine Weltanschauung” are out of print. To some extent, their lack was recognized and Leisegang's "forms of thought" were received.

Works and essays (selection)

  • The space theory in later Platonism, especially with Philo and the Neoplatonists . Strasbourg 1912
  • The concept of time and eternity in later Platonism . Aschendorff, Münster 1913
  • The holy spirit . Volume I. Teubner, Leipzig 1919
  • Pneuma hagion. The origin of the concept of spirit in the synoptic gospels from Greek mysticism . JC Hinrichs, Leipzig 1922. Reprographic reprint, G. Olms, Hildesheim, New York 1970
  • The occult sciences . Friedr. Andr. Perthes, Gotha 1922
  • The basics of anthroposophy . A criticism of Rudolf Steiner's writings (= Zeit- und Streitfragen , edited by Hans Gerber.). Hanseatic Publishing House, Hamburg 1922.
  • The apostle Paul as a thinker . Hinrichs, Leipzig 1923
  • The Gnosis . A. Kröner, Leipzig 1924. 2nd edition 1936. 5th edition, Kröner, Stuttgart 1985. ISBN 3-520-03205-8
  • Philonis Alexandrini opera quae supersunt. Vol. VII auctoritate Academiae Litterarum Borussicae editum. Indices ad Philonis Alexandrini opera quae composuit Joannes Leisegang . Pars I, 1926. Pars II, 1930. Berlin 1963
  • Ways of thinking . de Gruyter, Berlin 1928. 2nd edition 1950
  • The allegorical world view of St. Hildegard von Bingen . Teubner, Leipzig 1930. Studies of the Warburg Library , Volume 16
  • Lessing's worldview . Leipzig 1931
  • Goethe's thinking . Leipzig, 1932
  • Luther as a German Christian . Junker and Dünnhaupt, Berlin 1934
  • Dante and the Christian worldview . Böhlau, Vienna 1941
  • Diode galvanometer . Mathematical and scientific dissertation, Jena 1942
  • Hegel, Marx, Kierkegaard . Scientific Edition Society, Berlin 1948
  • On the ethics of the West . Blaschker, Berlin 1949
  • The man of God as an archetype . Rhein-Verlag, Zurich 1950
  • The worldview of today's science and philosophy . Wichern-Verlag, Berlin-Spandau 1950
  • Introduction to Philosophy 1951. 8th edition de Gruyter, Göschen Collection , Volume 4281, Berlin, New York 1973. ISBN 3-11-004626-1
  • My worldview. From the estate as a farewell greeting, ed. from D. Free University of Berlin . Berlin, 1951

(Detailed catalog of works in: Klaus-M. Kodalle (Ed.): Philosophy of an Unadapted: Hans Leisegang )

literature

Footnotes

  1. ↑ Louis Lange (Ed.): Kyffhäuser Association of German Student Associations. Address book 1931. Berlin 1931, p. 131.
  2. ^ Klaus Diecke: Inquiries to Hans Leisegang's political ethics. In: Klaus-M. Kodalle (ed.): Philosophy of an Unadjusted: Hans Leisegang. Würzburg, 2003.
  3. ↑ Folker Siegert: Leisegang's contribution to Philon research. In: Klaus-M. Kodalle (ed.): Philosophy of an Unadjusted: Hans Leisegang. Würzburg, 2003.
  4. ↑ http://www.uni-protocol.de/nachrichten/id/70659/
  5. ^ Karen Gloy (Ed.): Rationality types. Freiburg 1999. ISBN 3-495-47960-0

Web links
personal data
SURNAME Leisegang, Hans
BRIEF DESCRIPTION German philosopher, physicist and author
DATE OF BIRTH March 13, 1890
PLACE OF BIRTH Blankenburg (Thuringia)
DATE OF DEATH April 5, 1951
Place of death Berlin