Garth L. Hallett, S. J., is Dean of the College of Philosophy and Letters at St. Louis University. He is the author of Wittgenstein's Definition of Meaning as Use; Darkness and Light: The Analysis of Doctrinal Statements; A Companion to Wittgenstein's "Philosophical Investigations;" Christian Moral Reasoning: An Analytic Guide; Logic for the Labyrinth: A Guide to Critical Thinking; Reason and Right; Language and Truth; and Christian Neighbor-Love: An Assessment of Six Rival Versions.