German Wiener Kreis
Group of philosophers, scientists, and mathematicians formed in the 1920s that met regularly in Vienna to investigate scientific language and scientific method .
It formed around Moritz Schlick (1882–1936), who taught at the University of Vienna; its members included Gustav Bergmann, Philipp Frank, Kurt Godel , Friedrich Waismann, Otto Neurath, Herbert Feigl, and Victor Kraft. The movement associated with the Circle has been called {{link=logical positivism">logical positivism . Its members' work was distinguished by their attention to the form of scientific theories, their formulation of a verifiability principle of meaning, and their espousal of a doctrine of unified science . The group dissolved after the Nazis invaded Austria in 1938.