Speakable and Unspeakable in Quantum Mechanics: Collected Papers on Quantum Philosophy
"One of the leading expositors and interpreters of modern quantum theory, John Bell is particularly famous for his discovery of the crucial difference between the predictions of conventional quantum mechanics and the implications of local causality.  This book includes all of John Bell's published and unpublished papers on the conceptual and philosophical problems of quantum mechanics."   Astronomical Society of the Pacific"...should be read by everyone interested in fundamental questions of nature." -American Journal of Physics