Introduction
    The Ancient World
      Animism                                      10 (1)
      Monotheism                                   10 (2)
      Geometry                                     12 (1)
      The Afterlife                                13 (1)
      Codified Law                                 14 (1)
      The Alphabet                                 15 (2)
      The Seven Day Week                           17 (1)
      Democracy                                    17 (2)
      Buddhism                                     19 (2)
      Confucianism                                 21 (1)
      Stoicism                                     21 (1)
      Atomism                                      22 (1)
      The Socratic Method                          22 (2)
      The Platonic Ideal                           24 (1)
      Aristotelian Logic                           25 (1)
      Infinity                                     26 (1)
      Epicureanism                                 27 (1)
      Skepticism                                   28 (1)
      The Roman Arch                               29 (1)
      Christianity                                 30 (1)
      Apocalypse                                   31 (2)
      St. Augustine's The City of God              33 (3)
    The Middle Ages
      The Problem of Evil                          36 (1)
      Free Will                                    37 (1)
      Islam                                        38 (2)
      Iconoclasm                                   40 (1)
      Zero                                         40 (2)
      Gunpowder                                    42 (1)
      Habeas Corpus                                42 (2)
      Trial by Jury                                44 (1)
      The Magna Carta                              44 (1)
      St. Thomas Aquinas                           45 (1)
      Mysticism                                    46 (4)
    The Renaissance
      Humanism                                     50 (1)
      Classicism                                   51 (1)
      Spatial Perspective                          52 (2)
      Movable Type                                 54 (1)
      Niccolo Machiavelli                          54 (2)
      Utopia                                       56 (1)
      The Protestant Reformation                   57 (1)
      Nicolaus Copernicus                          58 (4)
    The Age of Enlightenment
      The Scientific Method                        62 (1)
      The Divine Right of Kings                    63 (1)
      "I Think, Therefore I Am"                    64 (1)
      Electricity                                  64 (2)
      Thomas Hobbes' Leviathan                     66 (2)
      Newtonian Physics                            68 (1)
      John Locke's Two Treatises                   69 (1)
      The Cyclical Theory of History               69 (2)
      Deism                                        71 (1)
      "The best of all possible worlds"            71 (1)
      Marine Chronometers                          72 (2)
      The Separation of Powers                     74 (1)
      Jean-Jacques Rousseau                        75 (1)
      The Free Market                              76 (2)
      Immanuel Kant                                78 (1)
      Hegel's Dialectic                            78 (1)
      Edmund Burke's Conservatism                  79 (1)
      Women's Rights                               80 (1)
      Equality                                     81 (1)
      Separation of Church and State               82 (1)
      Utilitarianism                               83 (4)
    Modern Times
      Romanticism                                  87 (1)
      Transcendentalism                            87 (2)
      Trade Unionism                               89 (1)
      Anarchism                                    89 (2)
      Photography                                  91 (1)
      Marxism                                      92 (1)
      Nationalism                                  93 (1)
      Abolitionism                                 94 (2)
      Genetics                                     96 (1)
      Nihilism                                     97 (1)
      Evolution                                    98 (2)
      The Germ Theory of Disease                   100(1)
      Friedrich Nietzsche                          101(1)
      Pragmatism                                   102(1)
      Freudianism                                  102(2)
      Flight                                       104(3)
      Leninism                                     107(1)
      Relativity Theory                            107(2)
      Modernism                                    109(1)
      The Collective Unconscious                   109(1)
      The Assembly Line                            110(1)
      The Big Bang                                 111(1)
      Surrealism                                   112(1)
      Keynesian Economics                          113(1)
      Fascism                                      114(2)
      Television                                   116(1)
      Computers                                    117(1)
      Existentialism                               118(1)
      Nonviolence                                  119(1)
      Atheism                                      120(1)
      Chaos Theory                                 120(2)
      Gay Identity                                 122(1)
      Behaviorism                                  123(1)
      Structuralism                                124(1)
      Monetarism                                   124(2)
      Extraterrestrial Life                        126(1)
      Animal Rights                                127(1)
      The World Wide Web                           128