Life's Ultimate Questions is unique among introductory philosophy textbooks. By synthesizing three distinct approaches -- topical, historical, and worldview/conceptual systems -- it affords students a breadth and depth of perspective previously unavailable in standard introductory texts. Part One, Six Conceptual Systems, explores the philosophies of: naturalism, Plato, Aristotle, Plotinus, Augustine, and Aquinas. Part Two, Important Problems in Philosophy, sheds light on: The Law of Noncontradiction, Possible Words, Epistemology I: Whatever Happened to Truth?, Epistemology II: A Tale of Two Systems, Epistemology III: Reformed Epistemology, God I: The Existence of God, God II: The Nature of God, Metaphysics: Some Questions About Indeterminism, Ethics I: The Downward Path, Ethics II: The Upward Path, Human Nature: The Mind-Body Problem and Survival After Death