Kant published the Critique of Pure Reason (henceforth Critique) in two editions, and there are substantial differences between them. They are interlaced in the translation by N. Kemp Smith (2nd edn, London: Macmillan, 1933), where the ‘A’ numbering in the margin refers to the first edition and the ‘B’ numbering to the second, corresponding to the pagination of the German originals. Quotations in this book are taken from this edition, which has hitherto been standardly employed in English-language Kant commentary. Two new translations of the Critique have appeared very recently, the one by W. Pluhar (Indianapolis: Hackett, 1997), the other by P. Guyer and A. Wood (Cambridge: Cambridge University Press, 1998).
References are also made in this book to Kant’s Prolegomena to any Future Metaphysics (Proleg) (trans. J. Ellington, Indianapolis: Hackett, 1977), Critique of Practical Reason (CPracR) and Groundwork of the Metaphysics of Morals (Gr) (trans. and ed. M. Gregor, in Kant, Practical Philosophy, Cambridge: Cambridge University Press, 1996), Critique of Judgement (CJ) (trans. W. Pluhar, Indianapolis: Hackett, 1987) and his Philosophical Correspondence, 1759-99 (ed. and trans. A. Zweig, Chicago: University of Chicago Press, 1967). Where material from these works is quoted, it is taken