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.
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