A Survey of Metaphysics

2002

An Introduction to the Philosophy of Mind

2000

Forms of Thought

A Study in Philosophical Logic

2013

Locke

2002

More Kinds of Being

A Further Study of Individuation, Identity, and the Logic of Sortal Terms

2009

Routledge Philosophy Guidebook to Locke on Human Understanding

1995

The Four-Category Ontology

A Metaphysical Foundation for Natural Science

2005

The Possibility of Metaphysics

Substance, Identity, and Time

1998