Preface -- Conventions -- Abbreviations -- Introduction -- 1. The place of Book 12 in Aristotle's Metaphysics -- 2. Who wrote the commentary on Book 12? -- 3. Critical assessments of Ps.-Alexander -- 4. Ps.-Alexander's interpretation of Metaphysics 12 -- 5. Sources of Ps.-Alexander's commentary on Metaphysics 12 Textual Emendations Translation Notes -- Appendix I: Freudenthal's Comparison of the Two Alexanders -- Appendix II: Comparison of Ps.-Alexander's Readings with the Aristotle Manuscripts -- Bibliography -- English-Greek Glossary -- Greek-English Index -- Index of Passages from Other Works -- Subject Index.