Jonathan Barnes taught at Oxford for 25 years, being a Fellow first of Oriel and then of Balliol. He then spent eight years at the University of Geneva, before becoming Professor of Ancient Philosophy at the Sorbonne. He is a Fellow of the British Academy, and of the American Academy of Arts and Sciences. His many publications include The Ontological Argument (Macmillan, 1972); Aristotle's Posterior Analytics (Clarendon Press, 2nd edition 1993); Aristotle (OUP, 1982); The Complete Works of Aristotle (Princeton UP, 1984); Truth, etc. (Clarendon Press, 2007); Method and Metaphysics: Essays in Ancient Philosophy I (OUP, 2011); and Logical Matters: Essays in Ancient Philosophy II (OUP, 2012); The Modes of Scepticism (with J. Annas; CUP, 1985); Early Greek Philosophy (Penguin, 1987); The Toils of Scepticism (CUP, 1990); The Cambridge Companion to Aristotle (CUP, 1995); Porphyry: Introduction (Clarendon Press, 2003).

All serious students of ancient philosophy will enjoy revisiting some of Barnes's best work and are certain to discover new gems as well. The essays are consistently a pleasure to read: few scholars of ancient philosophy can match Barnes's erudition, and perhaps no one else manages to be so lively, engaging and provocative while revealing new depths in the subject.

• Acknowledgements ; Preface ; 1. Logic and the imperial Platonists ; 2. Galen and the utility of logic ; 3. Reason and faith ; 4. Socrates and the jury ; 5. Aristotle on knowledge and proof ; 6. Proof and the syllogism ; 7. Aristotle's theory of demonstration ; 8. Aristotle's philosophy of the sciences ; 9. Aristotle, Menaechmus, and circular proof ; 10. Proofs and syllogisms in Galen ; 11. Galen on logic and therapy ; 12. Language in Galen's simp med temp ; 13. Epicurean signs ; 14. Proof destroyed ; 15. nova non philosophandi philosophia ; 16. Sextan scepticism ; 17. Pyrrhonism, belief, and causation ; 18. Scepticism and the arts ; 19. Scepticism and relativity ; 20. Scepticism and scandal ; 21. An Aristotelian way with scepticism ; 22. Scepticism and the Book of Ecclesiastes ; Bibliography ; Index of Passages ; General Index

Jonathan Barnes taught at Oxford for 25 years, being a Fellow first of Oriel and then of Balliol. He then spent eight years at the University of Geneva, before becoming Professor of Ancient Philosophy at the Sorbonne. He is a Fellow of the British Academy, and of the American Academy of Arts and Sciences. His many publications include The Ontological Argument (Macmillan, 1972); Aristotle's Posterior Analytics (Clarendon Press, 2nd edition 1993); Aristotle (OUP, 1982); The Complete Works of Aristotle (Princeton UP, 1984); Truth, etc. (Clarendon Press, 2007); Method and Metaphysics: Essays in Ancient Philosophy I (OUP, 2011); and Logical Matters: Essays in Ancient Philosophy II (OUP, 2012); The Modes of Scepticism (with J. Annas; CUP, 1985); Early Greek Philosophy (Penguin, 1987); The Toils of Scepticism (CUP, 1990); The Cambridge Companion to Aristotle (CUP, 1995); Porphyry: Introduction (Clarendon Press, 2003).

All serious students of ancient philosophy will enjoy revisiting some of Barnes's best work and are certain to discover new gems as well. The essays are consistently a pleasure to read: few scholars of ancient philosophy can match Barnes's erudition, and perhaps no one else manages to be so lively, engaging and provocative while revealing new depths in the subject.

• Acknowledgements ; Preface ; 1. Logic and the imperial Platonists ; 2. Galen and the utility of logic ; 3. Reason and faith ; 4. Socrates and the jury ; 5. Aristotle on knowledge and proof ; 6. Proof and the syllogism ; 7. Aristotle's theory of demonstration ; 8. Aristotle's philosophy of the sciences ; 9. Aristotle, Menaechmus, and circular proof ; 10. Proofs and syllogisms in Galen ; 11. Galen on logic and therapy ; 12. Language in Galen's simp med temp ; 13. Epicurean signs ; 14. Proof destroyed ; 15. nova non philosophandi philosophia ; 16. Sextan scepticism ; 17. Pyrrhonism, belief, and causation ; 18. Scepticism and the arts ; 19. Scepticism and relativity ; 20. Scepticism and scandal ; 21. An Aristotelian way with scepticism ; 22. Scepticism and the Book of Ecclesiastes ; Bibliography ; Index of Passages ; General Index

Jonathan Barnes taught at Oxford for 25 years, being a Fellow first of Oriel and then of Balliol. He then spent eight years at the University of Geneva, before becoming Professor of Ancient Philosophy at the Sorbonne. He is a Fellow of the British Academy, and of the American Academy of Arts and Sciences. His many publications include The Ontological Argument (Macmillan, 1972); Aristotle's Posterior Analytics (Clarendon Press, 2nd edition 1993); Aristotle (OUP, 1982); The Complete Works of Aristotle (Princeton UP, 1984); Truth, etc. (Clarendon Press, 2007); Method and Metaphysics: Essays in Ancient Philosophy I (OUP, 2011); and Logical Matters: Essays in Ancient Philosophy II (OUP, 2012); The Modes of Scepticism (with J. Annas; CUP, 1985); Early Greek Philosophy (Penguin, 1987); The Toils of Scepticism (CUP, 1990); The Cambridge Companion to Aristotle (CUP, 1995); Porphyry: Introduction (Clarendon Press, 2003).

All serious students of ancient philosophy will enjoy revisiting some of Barnes's best work and are certain to discover new gems as well. The essays are consistently a pleasure to read: few scholars of ancient philosophy can match Barnes's erudition, and perhaps no one else manages to be so lively, engaging and provocative while revealing new depths in the subject.

• Acknowledgements ; Preface ; 1. Logic and the imperial Platonists ; 2. Galen and the utility of logic ; 3. Reason and faith ; 4. Socrates and the jury ; 5. Aristotle on knowledge and proof ; 6. Proof and the syllogism ; 7. Aristotle's theory of demonstration ; 8. Aristotle's philosophy of the sciences ; 9. Aristotle, Menaechmus, and circular proof ; 10. Proofs and syllogisms in Galen ; 11. Galen on logic and therapy ; 12. Language in Galen's simp med temp ; 13. Epicurean signs ; 14. Proof destroyed ; 15. nova non philosophandi philosophia ; 16. Sextan scepticism ; 17. Pyrrhonism, belief, and causation ; 18. Scepticism and the arts ; 19. Scepticism and relativity ; 20. Scepticism and scandal ; 21. An Aristotelian way with scepticism ; 22. Scepticism and the Book of Ecclesiastes ; Bibliography ; Index of Passages ; General Index