Dr Michela Massimi was rewarded a PhD in Philosophy from the London School of Economics in 2002. From October 2002 to September 2005, Dr Massimi was a Research Fellow in history and philosophy of science at Girton College, University of Cambridge and affiliated with the Department of History and Philosophy of Science. Before joining UCL in October 2005, Dr Massimi lectured on the philosophy of science and philosophy of physics at the University of Cambridge, both in the Philosophy Faculty and in the Physics Department (Cavendish Laboratory). Dr Massimi is a member of the British Society for Philosophy of Science, the Philosophy of Science Association, and the American Philosophical Association.

• Preface; List of contributors; 1. Why there are no ready-made phenomena: what philosophers of science should learn from Kant Michela Massimi; 2. Reduction, unity, and the nature of science: Kant's legacy? Margaret Morrison; 3. Invariance principles as regulative ideals: from Wigner to Hilbert Thomas Ryckman; 4. Objectivity: a Kantian perspective Roberto Torretti; 5. Einstein, Kant, and the a priori Michael Friedman; 6. Contingent transcendental arguments for metaphysical principles Hasok Chang; 7. Arithmetic from Kant to Frege: numbers, pure units, and the limits of conceptual representation Daniel Sutherland; 8. Intuition and infinity: a Kantian theme with echoes in the foundations of mathematics Carl Posy; References.