* The Psychology of Perception (1965)
* The Concept of Mind (1967)
* The Science of Mind (1970)
* Metaphysics (1973)
* The Meaning of Life (1975)
* Values and the Good Life (1980)
* The Philosophical Basis of Biology (1984)
* Philosophy of Biology (1986)
* Psychology and the Philosophy of Science (1990)
* The Nature of Consciousness (1993)
* Understanding the Mind (1996)
* The Philosophy of Religion (1999)
* The Meaning of Life: A Philosophical Enquiry (2002)
* Philosophy and the Meaning of Life (2004)
Articles
* "The Concept of Mind" (1967)
* "Metaphysics and the Philosophy of Science" (1969)
* "The Meaning of Life" (1975)
* "Values and the Good Life" (1980)
* "The Philosophical Basis of Biology" (1984)
* "Philosophy and the Natural Sciences" (1986)
* "Psychology and the Philosophy of Science" (1990)
* "The Nature of Consciousness" (1993)
* "Understanding the Mind" (1996)
* "The Philosophy of Religion" (1999)
* "The Meaning of Life: A Philosophical Enquiry" (2002)
* "Philosophy and the Meaning of Life" (2004)