Vienna Circle

The Vienna Circle (German: Wiener Kreis) of Logical Empiricism was a group of philosophers and scientists drawn from the natural and social sciences, logic and mathematics who met regularly from 1924 to 1936 at the University of Vienna, chaired by Moritz Schlick. In 2015, as part of its 650th anniversary, the University of Vienna organized an exhibition on the Vienna Circle.

Among the members of the inner circle were Schlick, Hans Hahn, Philipp Frank, Otto Neurath, Rudolf Carnap, Herbert Feigl, Richard von Mises, Karl Menger, Kurt Gödel, Friedrich Waismann, Felix Kaufmann, Viktor Kraft and Edgar Zilsel. In addition, the Vienna Circle was occasionally visited by Alfred Tarski, Hans Reichenbach, Carl Gustav Hempel, Willard Van Orman Quine, Ernest Nagel, Alfred Jules Ayer, Oskar Morgenstern and Frank P. Ramsey.Ludwig Wittgenstein and Karl Popper were in close contact to the Vienna Circle, but never participated in the meetings of the Schlick Circle.

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