Metaphysics, ontology, and logic
Ontological categories and categorial schemes
The four-category ontology and its rivals
Some formal ontological relations
Formal ontology and logical syntax
The concept of an object in formal ontology
Properties, modes, and universals
Ramsey's problem and its solution
Metaphysics and natural science
Dispositions and natural laws
Kinds, essence, and natural necessity
Categorial ontology and scientific essentialism
Truth, truthmaking, and metaphysical realism
Metaphysical realism and the unity of truth
Truthmaking, necessity, and essential dependence.