Before revision: Meeting place of the Vienna Circle.Among the members of the inner circle were Moritz Schlick, Hans Hahn, Philipp Frank, Otto Neurath, Olga Hahn-Neurath, URL Rudolf Carnap, Herbert Feigl, Richard von Mises, Karl Menger, Kurt Gödel, Friedrich Waismann, Felix Kaufmann, Viktor Kraft and Edgar Zilsel.
After revision: Meeting place of the Vienna Circle.Among the members of the inner circle were Moritz Schlick, Hans Hahn, Philipp Frank, Otto Neurath, Olga Hahn-Neurath, Rudolf Carnap, Herbert Feigl, Richard von Mises, Karl Menger, Kurt Gödel, Friedrich Waismann, Felix Kaufmann, Viktor Kraft and Edgar Zilsel.