Arien Mack, Editor Arien Mack Editor’s Note The importance of twentieth century science is unquestioned, yet very few of us outside of the scientific community have any clear idea of why. This issue was conceived as an attempt to address this problem. Victor Weisskopf Niels Bohr, the Quantum, and the World This article examines the career of Danish physicist Niels Bohr (1885-1962) and prints his 9 June 1950 open letter to the UN pleading for free international exchange of i

Arien Mack, Editor Leon J. Kamin The Science and Politics of IQ Reviews the history of intelligence testing and its use as an instrument...

Helmuth Plessner De Homine Abscondito Our knowledge of man has changed, to a great extent, because of the discovery of prehistoric and...

Max Wertheimer On Truth The scientific situation with reference to the theory of truth is complicated at present... In this paper I shall...