1. All references to Kant’s works refer to the Akademie edition, briefly AK. The Roman letters refer to the volumes of the edition. The following further abbreviations are used: C pure R for the second edition of the Critique of Pure Reason,C pr R for the Critique of Practical Reason, Proleg for Prolegomena to any Future Metaphysics.
2. For a more detailed discussion of Kant’s account of the Categories and Ideas of pure reason see my “On Kant’s Theory of Concepts” in Proc. of the Sixth International Kant Congress, ed. by G. Funke and Th. M. Seebohm, Washington, 1990, pp. 55–70.
3. See “The Independence of the Continuum Hypothesis” in Proc. Nat. Ac. Sc. vol. 50, 51, 1963–64.
4. See Subtle is the Lord by A. Pais, O.U.P., 1982, ch. 12.
5. For a discussion of the justifiable predictive use of incompatible scientific theories see my “On Scientific Information, Explanation and Progress” in Proceedings of the Seventh International Congress of Logic, Methodology and Philosophy of Science, edited by Ruth Barcan Marcus et al., North Holland, 1986, pp. 1–15.