Volume I: The Age of Belief - The Medieval Philosophers by Anne Fremantle Volume II: The Age of Adventure - The Renaissance Philosophers by Giorgio de Santillana Volume III: The Age of Reason - The Seventeenth Century Philosophers by Stuart Hampshire Volume IV: The Age of Enlightenment - The Eighteenth Century Philosophers by Isaiah Berlin Volume V: The Age of Ideology - The Nineteenth Century Philosophers by Henry D. Aiken Volume VI: The Age of Analysis - The Twentieth Century Philosophers by Morton White
Volume I: The Age of Belief - The Medieval Philosophers by Anne Fremantle Volume II: The Age of Adventure - The Renaissance Philosophers by Giorgio de Santillana Volume III: The Age of Reason - The Seventeenth Century Philosophers by Stuart Hampshire Volume IV: The Age of Enlightenment - The Eighteenth Century Philosophers by Isaiah Berlin Volume V: The Age of Ideology - The Nineteenth Century Philosophers by Henry D. Aiken Volume VI: The Age of Analysis - The Twentieth Century Philosophers by Morton White