Tuomas E. Tahko is a postdoctoral researcher at the University of Helsinki, specializing in metaphysics and its methodology. He received his Ph.D. from Durham University in 2008 and has been a Visiting Scholar at New York University and the University of North Carolina, Chapel Hill.

'… this book makes a number of powerful and original contributions to the literature on contemporary Aristotelian metaphysics.' George Lăzăroiu, Review of Contemporary Philosophy

• 1. Introduction Tuomas E. Tahko; 2. What is metaphysics? Kit Fine; 3. In defence of Aristotelian metaphysics Tuomas E. Tahko; 4. Existence and quantification reconsidered Tim Crane; 5. Identity, quantification, and number Eric T. Olson; 6. Ontological categories Gary Rosenkrantz; 7. Are any kinds ontologically fundamental? Alexander Bird; 8. Are four categories two too many? John Heil; 9. Categories: four and more Peter Simons; 10. Neo-Aristotelianism and substance Joshua Hoffman; 11. Developmental potential Louis M. Guenin; 12. The origin of life and the definition of life Storrs McCall; 13. Essence, necessity and explanation Kathrin Koslicki; 14. No potency without actuality: the case of graph theory David S. Oderberg; 15. A neo-Aristotelian substance ontology: neither relational nor constituent E. J. Lowe.

Tuomas E. Tahko is a postdoctoral researcher at the University of Helsinki, specializing in metaphysics and its methodology. He received his Ph.D. from Durham University in 2008 and has been a Visiting Scholar at New York University and the University of North Carolina, Chapel Hill.

'… this book makes a number of powerful and original contributions to the literature on contemporary Aristotelian metaphysics.' George Lăzăroiu, Review of Contemporary Philosophy

• 1. Introduction Tuomas E. Tahko; 2. What is metaphysics? Kit Fine; 3. In defence of Aristotelian metaphysics Tuomas E. Tahko; 4. Existence and quantification reconsidered Tim Crane; 5. Identity, quantification, and number Eric T. Olson; 6. Ontological categories Gary Rosenkrantz; 7. Are any kinds ontologically fundamental? Alexander Bird; 8. Are four categories two too many? John Heil; 9. Categories: four and more Peter Simons; 10. Neo-Aristotelianism and substance Joshua Hoffman; 11. Developmental potential Louis M. Guenin; 12. The origin of life and the definition of life Storrs McCall; 13. Essence, necessity and explanation Kathrin Koslicki; 14. No potency without actuality: the case of graph theory David S. Oderberg; 15. A neo-Aristotelian substance ontology: neither relational nor constituent E. J. Lowe.

Tuomas E. Tahko is a postdoctoral researcher at the University of Helsinki, specializing in metaphysics and its methodology. He received his Ph.D. from Durham University in 2008 and has been a Visiting Scholar at New York University and the University of North Carolina, Chapel Hill.

'… this book makes a number of powerful and original contributions to the literature on contemporary Aristotelian metaphysics.' George Lăzăroiu, Review of Contemporary Philosophy

• 1. Introduction Tuomas E. Tahko; 2. What is metaphysics? Kit Fine; 3. In defence of Aristotelian metaphysics Tuomas E. Tahko; 4. Existence and quantification reconsidered Tim Crane; 5. Identity, quantification, and number Eric T. Olson; 6. Ontological categories Gary Rosenkrantz; 7. Are any kinds ontologically fundamental? Alexander Bird; 8. Are four categories two too many? John Heil; 9. Categories: four and more Peter Simons; 10. Neo-Aristotelianism and substance Joshua Hoffman; 11. Developmental potential Louis M. Guenin; 12. The origin of life and the definition of life Storrs McCall; 13. Essence, necessity and explanation Kathrin Koslicki; 14. No potency without actuality: the case of graph theory David S. Oderberg; 15. A neo-Aristotelian substance ontology: neither relational nor constituent E. J. Lowe.