Quantum Reality Relativistic Causality and Closing the Epistemic Circle : Essays in Honour of Abner Shimony In July 2006 a major international conference was held at the Perimeter Institute for Theoretical Physics Canada to celebrate the career and work of a remarkable man of letters. Abner Shimony who is well known for his pioneering contributions to foundations of quantum mechanics is a physicist as well as a philosopher and is highly respected among the intellectuals of both communities. In line with Shimonys conviction that philosophical investigation is not to be divorced from theoretical and empirical work in the sciences the conference brought together leading theoretical physicists experimentalists as well as philosophers. This book collects twenty three original essays stemming from the conference on topics including history and methodology of science Bells theorem probability theory the uncertainty principle stochastic modifications of quantum mechanics and relativity theory. It ends with a transcript of a fascinating discussion between Lee Smolin and Shimony ranging over the entire spectrum of Shimonys wide ranging contributions to philosophy science and philosophy of science.