Jaakko Hintikka is the author or co-author of thirty volumes and of some 300 scholarly articles in mathematical and philosophical logic, epistemology, language theory, philosophy of science, history of ideas and history of philosophy, including Aristotle, Descartes, Leibniz, Kant, Peirce, The Bloomsbury Group, Husserl and Wittgenstein. He has also been active in international scholarly organizations, most recently as the First Vice-President of FISP, Vice-President of IIP and Co-Chair of the American Organizing Committee of the Twentieth World Congress of Philosophy. He has been Editor-in-Chief of the International Journal Synthese and the Managing Editor of Synthese Library since 1965.

• I / History of Logic, Methodology and Philosophy of Science.- The Sources of Modern Methodology.- Difficulties in the Historiography of Science.- Logical, Ontological and Methodological Aspects of Scientific Revolutions.- The Origins of Traditional Grammar.- Galileo and the Justification of Experiments.- Leibnizian Space-Times and Leibnizian Algebras.- Changing Concepts of the a Priori.- Competing and Complementary Patterns of Explanation in Social Science.- Subjectivity, Objectivity and Ontological Commitment in the Empirical Sciences.- Genealogy of Science and Theory of Knowledge.- II / Historical Perspectives on the Concept of Matter.- Evolution of the Concept of Matter in Science and Philosophy.- Material Causality.- III / Theory Change.- Describing Revolutionary Scientific Change: a Formal Approach.- Accidental (‘Non-Substantial’) Theory Change and Theory Dislodgment.- Theory-Change as Structure-Change: Comments on the Sneed Formalism.- IV / Programme of the 5th Congress (Appendix).- Programme of the Fifth International Congress of Logic, Methodology and Philosophy of Science.- Index of Names.

Jaakko Hintikka is the author or co-author of thirty volumes and of some 300 scholarly articles in mathematical and philosophical logic, epistemology, language theory, philosophy of science, history of ideas and history of philosophy, including Aristotle, Descartes, Leibniz, Kant, Peirce, The Bloomsbury Group, Husserl and Wittgenstein. He has also been active in international scholarly organizations, most recently as the First Vice-President of FISP, Vice-President of IIP and Co-Chair of the American Organizing Committee of the Twentieth World Congress of Philosophy. He has been Editor-in-Chief of the International Journal Synthese and the Managing Editor of Synthese Library since 1965.

• I / History of Logic, Methodology and Philosophy of Science.- The Sources of Modern Methodology.- Difficulties in the Historiography of Science.- Logical, Ontological and Methodological Aspects of Scientific Revolutions.- The Origins of Traditional Grammar.- Galileo and the Justification of Experiments.- Leibnizian Space-Times and Leibnizian Algebras.- Changing Concepts of the a Priori.- Competing and Complementary Patterns of Explanation in Social Science.- Subjectivity, Objectivity and Ontological Commitment in the Empirical Sciences.- Genealogy of Science and Theory of Knowledge.- II / Historical Perspectives on the Concept of Matter.- Evolution of the Concept of Matter in Science and Philosophy.- Material Causality.- III / Theory Change.- Describing Revolutionary Scientific Change: a Formal Approach.- Accidental (‘Non-Substantial’) Theory Change and Theory Dislodgment.- Theory-Change as Structure-Change: Comments on the Sneed Formalism.- IV / Programme of the 5th Congress (Appendix).- Programme of the Fifth International Congress of Logic, Methodology and Philosophy of Science.- Index of Names.