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© 2006 University of Chicago Library
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When quoting material from this collection, the preferred citation is: Unity of Science Movement. Records,[Box #, Folder #], Hanna Holborn Gray Special Collections Research Center, University of Chicago Library
The Unity of Science Movement was a philosophic program that developed from the positions of the "Vienna Circle" philosophers of the late 1920s. The movement's founder and chief promoter was the sociologist Otto Neurath; and Charles W. Morris of the University of Chicago and Rudolph Carnap were also very active in the group's administration. Phillip Frank, Hans Reichenbach, Louis Roughier, Joergen Joergensen, Herbert Feigl, Carl Hempel and Victor F. Lenzen also contributed to the literature of unified science, whose advocates sought a common empirical attitude towards all the sciences and strove to develop a single, comprehensive scientific language. The participants in the movement believed a unified philosophical and methodological foundation for the sciences could be constructed by these means, and by the careful excision from science of "metaphysical," i.e., nonempirical concepts.
Along with their philosophic program, the members of the movement undertook the publication of the International Encyclopedia of Unified Science. Otto Neurath began organizing this project in 1935 during the first of many International Congresses for the Unity of Science. Throughout the 1930s there was an outpouring of unified science literature from sources including the journal Erkenntnis (edited by Rudolph Carnap and Hans Reichenbach), the publication series Einheitswissenschaft, and the American journals Philosophy of Science and the Journal of Symbolic Logic. Though the initial interest in the movement among philosophers was strong, activity in the Unity of Science Movement was severely restricted by the outbreak of the Second World War. Only the first two of the planned 200 volumes of the Encyclopedia were ever published. The congresses were stopped in 1941, the last having been held at the University of Chicago. Neurath relocated in England during the war and died there in 1945. Many of the other European members of the movement immigrated to the United States and contributed to the development of American scientific philosophy in the 1950s and 1960s.
Series I: GENERAL CORRESPONDENCE
This series (Boxes 1-2) contains extensive correspondence among Neurath, Morris and Rudolph Carnap. Also included are letters from John Dewey, Ernest Nagel, Carl Hempel, Herbert Feigl, Hans Reichenbach, Phillip Frank and Bertrand Russell. The correspondence is arranged alphabetically by author, and the letters of Rudolph Carnap (1:4), Charles Morris (1:15-18, 2:1-4) and Otto Neurath (2:6-14) are chronologically arranged.
Series II. ORGANIZATIONAL MATERIAL
The second series (BOX 3) contains manuscripts from the planning of the congresses, as well as programs, announcements and abstracts from the 6th International Congress for the Unity of Science held at the University of Chicago in 1941.
The following related resources are located in the Department of Special Collections: