Peter Sullivan is a Professor at the University of Stirling where he has taught since 1993. The primary focus of his published work has been on the founding figures of analytic philosophy: Frege, Russell, the early Wittgenstein, and Ramsey. Michael Potter, University Lecturer in Philosophy, University of Cambridge, and Fellow, Fitzwilliam College, Cambridge . He is the author of Sets (OUP, 1990), Reason's Nearest Kin (OUP, 2000), Set Theory and its Philosophy (OUP, 2004), and Mathematical Knowledge (edited with Mary Leng and Alexander Paseau, OUP, 2007).

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• 1. Introduction ; 2. Wittgenstein's pre-Tractatus manuscripts: a new appraisal ; 3. Why does Wittgenstein say that ethics and aesthetics are one and the same? ; 4. Kierkegaard and the Tractatus ; 5. What is Frege's 'concept horse problem'? ; 6. Tractatus 5.4611: 'Signs for logical operations are punctuation marks' ; 7. Logical segmentation and generality in Wittgenstein's Tractatus ; 8. Does the Tractatus contain a private language argument? ; 9. Logic and solipsism ; 10. Was the author of the Tractatus a transcendental idealist? ; 11. Idealism in Wittgenstein: a further reply to Moore ; Index

Peter Sullivan is a Professor at the University of Stirling where he has taught since 1993. The primary focus of his published work has been on the founding figures of analytic philosophy: Frege, Russell, the early Wittgenstein, and Ramsey. Michael Potter, University Lecturer in Philosophy, University of Cambridge, and Fellow, Fitzwilliam College, Cambridge . He is the author of Sets (OUP, 1990), Reason's Nearest Kin (OUP, 2000), Set Theory and its Philosophy (OUP, 2004), and Mathematical Knowledge (edited with Mary Leng and Alexander Paseau, OUP, 2007).

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• 1. Introduction ; 2. Wittgenstein's pre-Tractatus manuscripts: a new appraisal ; 3. Why does Wittgenstein say that ethics and aesthetics are one and the same? ; 4. Kierkegaard and the Tractatus ; 5. What is Frege's 'concept horse problem'? ; 6. Tractatus 5.4611: 'Signs for logical operations are punctuation marks' ; 7. Logical segmentation and generality in Wittgenstein's Tractatus ; 8. Does the Tractatus contain a private language argument? ; 9. Logic and solipsism ; 10. Was the author of the Tractatus a transcendental idealist? ; 11. Idealism in Wittgenstein: a further reply to Moore ; Index

Peter Sullivan is a Professor at the University of Stirling where he has taught since 1993. The primary focus of his published work has been on the founding figures of analytic philosophy: Frege, Russell, the early Wittgenstein, and Ramsey. Michael Potter, University Lecturer in Philosophy, University of Cambridge, and Fellow, Fitzwilliam College, Cambridge . He is the author of Sets (OUP, 1990), Reason's Nearest Kin (OUP, 2000), Set Theory and its Philosophy (OUP, 2004), and Mathematical Knowledge (edited with Mary Leng and Alexander Paseau, OUP, 2007).

Select Guide Rating

• 1. Introduction ; 2. Wittgenstein's pre-Tractatus manuscripts: a new appraisal ; 3. Why does Wittgenstein say that ethics and aesthetics are one and the same? ; 4. Kierkegaard and the Tractatus ; 5. What is Frege's 'concept horse problem'? ; 6. Tractatus 5.4611: 'Signs for logical operations are punctuation marks' ; 7. Logical segmentation and generality in Wittgenstein's Tractatus ; 8. Does the Tractatus contain a private language argument? ; 9. Logic and solipsism ; 10. Was the author of the Tractatus a transcendental idealist? ; 11. Idealism in Wittgenstein: a further reply to Moore ; Index