Philosophical Dialectics: An Essay on Metaphilosophy

Quantitative Studies in Philosophy

Issues in the Philosophy of Religion

The Pragmatic Vision: Themes in Philosophical Pragmatism

Dialectics: A Controversy-Oriented Approach to the Theory of Knowledge

Process Metaphysics: An Introduction to Process Philosophy

Humanistic Philosophizing: Sensibility and Speculation in Philosophical Inquiry

Reason and Religion

Free Will: A Philosophical Reappraisal

Infinite Regress: The Theory and History of Varieties of Change

Being and Value and Other Philosophical Essays

On Explaining Existence

Predicting the Future: An Introduction to the Theory of Forecasting

G.W. Leibniz's Monadology

Vagaries of Value: Basic Issues in Value Theory

Epistemology: An Introduction to the Theory of Knowledge

Metaphilosophy: Philosophy in Philosophical Perspective

Productive Evolution: On Reconciling Evolution with Intelligent Design

Axiogenesis: An Essay in Metaphysical Optimalism