Includes bibliographical references and index.

Preface;
1 Life and Work;
1.1 Early Years;
1.2 A Young Scholar;
1.3 Master of Theology;
1.4 Back to Italy;
1.5 A Second Term in Paris;
1.6 Breakdown;
2 Aquinas's Explanatory Framework: The Four Causes;
2.1 Introducing the Four Causes;
2.1.1 Matter and Form;
2.1.2 The Efficient Cause;
2.1.3 The Final Cause;
2.1.4 The Four Causes Reviewed and Briefly Illustrated;
2.2 The Four Causes Developed and Articulated;
2.2.1 Mutual Priority;
2.2.2 Priority Among the Causes;
2.2.3 Proximate and Non-Proximate Causes;
2.2.4 Causal Coincidence;
2.2.5 Incidental Causes;
2.3 Conclusions;
3 Aquinas's Metaphysical Framework: Being and Essence;
3.1 Beings and Essences;
3.2 Material Substances;
3.2.1 First Qualification;
3.2.2 Second Qualification;
3.2.3 Third Qualification;
3.3 Immaterial Substances;
3.4 Substance and Accidents;
3.5 Universals;
3.5.1 Qualitative Sameness;
3.5.2 Numerical Sameness;
3.6 Conclusions;
4 God's Existence and Nature;
4.1 Our Knowledge of God;
4.2 Phase One: God's Existence;
4.2.1 The Proof from Motion;
4.2.2 The Proof from Degrees of Truth;
4.3 Phase Two: God's Nature;
4.3.1 Absolute Simplicity;
4.3.2 From Intellect to Will;
4.4 Understanding God's Attributes: Analogical Predication;
4.5 Conclusions;
5 The Order of the Universe;
5.1 God's Power;
5.1.1 Creation;
5.1.2 Omnipotence and Creation;
5.1.3 The Beginning of the Universe;
5.2 The Created Order;
5.3 Providence;
5.3.1 Conservation;
5.3.2 Necessity and Freedom;
5.4 Conclusions;
6 The Human Soul and the Human Body;
6.1 The Special Status of Human Beings;
6.2 Soul as a Principle of Life;
6.3 Souls and Bodies: Hylomorphism;
6.4 Against Reductive Materialism;
6.5 Against Platonism;
6.6 A Difficult Intermediary;
6.7 Soul as Subsistent;
6.8 Where in the Body Is the Soul?;
6.9 Conclusions;
7 Sense and Intellect;
7.1 The Nature of Cognition;
7.2 The Cognitive Powers;
7.2.1 Sensation;
7.2.2 The Immateriality of Cognition;
7.2.3 An Argument for the Intellect's Immateriality;
7.3 Cognitive Functions;
7.3.1 The Objects of Intellect;
7.3.2 Abstraction;
7.3.3 Illumination;
7.3.4 Concept Formation;
7.4 Conclusions;
8 The Goal of Human Life;
8.1 Introduction;
8.2 That There Is a Human End;
8.3 Happiness;
8.4 What Happiness Is Not;
8.5 What Happiness Is;
8.6 The Beatific Vision;
8.7 Conclusions;
9 Ethics;
9.1 Overview;
9.2 Natural Law;
9.2.1 Nature and Eternal Law;
9.2.2 Natural Inclinations;
9.2.3 The Passions;
9.3 Virtue;
9.3.1 The Need for Virtue;
9.3.2 The Perfection of Virtue;
9.3.3 Prudence;
9.4 Conclusions;
Glossary;
Catalog of Works;
Index.