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- Entries A-Z
- Subject index
Experiments, Thought
Because we are not always able to carry out physical experiments to learn more about our world, scientists, philosophers, and others use thought experiments. This type of experiment is a way to use the imagination to investigate puzzles and new theories. ...
- Biography
- Abelard, Peter
- Albertus Magnus
- Alexander the Great
- Alexander, Samuel
- Alighieri, Dante
- Anaximander
- Anaximines
- Anselm of Canterbury
- Apollodorus of Athens
- Aquinas, Saint Thomas
- Aristotle
- Asimov, Isaac
- Attila the Hun
- Augustine of Hippo, Saint
- Avicenna
- Böhm, David
- Baer, Karl Ernst Ritter von
- Bakhtin, Mikhail Mikhailovich
- Barth, Karl
- Baxter, Stephen
- Bede the Venerable, Saint
- Bergson, Henri
- Berkeley, George
- Boethius, Anicius
- Bonaparte, Napoleon
- Boscovich, Roger Joseph
- Boucher de Perthes, Jacques
- Bradbury, Ray
- Bruno, Giordano
- Caesar, Gaius Julius
- Calvin, John
- Campanella, Tommaso
- Carroll, Lewis
- Cartan, Elie Joseph
- Chambers, Robert
- Charlemagne
- Chaucer, Geoffrey
- Clarke, Arthur C.
- Coleridge, Samuel Taylor
- Columbus, Christopher
- Comte, Auguste
- Copernicus, Nicolaus
- Dalí, Salvador
- Darwin, Charles
- Deleuze, Gilles
- Derrida, Jacques
- Descartes, René
- Diderot, Denis
- Dilthey, Wilhelm
- Donne, John
- Dostoevsky, Fyodor M.
- Doyle, Arthur Conan
- Duns Scotus, John
- Durkheim, Emile
- Eckhart, Meister
- Einstein, Albert
- Eliade, Mircea
- Eliot, T. S.
- Empedocles
- Engels, Friedrich
- Eriugena, Johannus Scotus
- Farber, Marvin
- Feuerbach, Ludwig
- Fichte, Johann Gottlieb
- Flaubert, Gustave
- Frege, Gottlob
- Gödel, Kurt
- Galilei, Galileo
- Gamow, George
- Gehlen, Arnold
- Genghis Khan
- Gibran, Kahlil
- Goethe, Johann Wolfgang von
- Gosse, Philip Henry
- Haeckel, Ernst
- Harris, Marvin
- Harrison, John
- Hartshorne, Charles
- Hawking, Stephen
- Hegel, Georg Wilhelm Friedrich
- Heidegger, Martin
- Heraclitus
- Herder, Johann Gottfried von
- Herodotus
- Hesiod
- Hitler, Adolf
- Homer
- Hume, David
- Husserl, Edmund
- Hutton, James
- Huxley, Thomas Henry
- Jaspers, Karl
- Josephus, Flavius
- Joyce, James
- Kafka, Franz
- Kant, Immanuel
- Kierkegaard, S⊘ren Aabye
- Knezevi', Bozidar
- Kropotkin, Peter A.
- Kuhn, Thomas S.
- Lamarck, Jean-Baptiste de
- Laplace, Marquis Pierre-Simon de
- Leibniz, Gottfried Wilhelm von
- Lemaître, Georges Édouard
- Lenin, Vladimir Ilich
- Lucretius
- Luther, Martin
- Lydgate, John
- Lyell, Charles
- Lysenko, Trofim D.
- Mach, Ernst
- Machiavelli, Niccolo
- Malthus, Thomas
- Mann, Thomas
- Maritain, Jacques
- Marx, Karl
- Maximus the Confessor, Saint
- McTaggart, John M. E.
- Mellor, David Hugh
- Merleau-Ponty, Maurice
- Methuselah
- Michelangelo Buonarroti
- Milton, John
- More, Saint Thomas
- Morgan, Lewis Henry
- Nāgārjuna, Acharya
- Nabokov, Vladimir
- Nero, Emperor of Rome
- Nevsky, Saint Alexander
- Newton, Isaac
- Nicholas of Cusa (Cusanus)
- Nietzsche, Friedrich
- Nostradamus
- Oparin, A. I.
- Orwell, George
- Ovid
- Paley, William
- Paracelsus
- Parmenides of Elea
- Petrarch, Francesco
- Philo Judaeus
- Philoponus and Simplicius
- Piaget, Jean
- Plato
- Plotinus
- Plutarch
- Poincaré, Henri
- Polo, Marco
- Popper, Karl R.
- Prigogine, Ilya
- Proust, Marcel
- Pythagoras of Samos
- Rahner, Karl
- Rameses II
- Rawls, John
- Renan, Joseph Ernest
- Ricoeur, Paul
- Rousseau, Jean-Jacques
- Russell, Bertrand
- Sagan, Carl
- Santayana, George
- Scheler, Max
- Schelling, Friedrich W. J. von
- Schopenhauer, Arthur
- Simmel, Georg
- Sloterdijk, Peter
- Smith, William
- Spencer, Herbert
- Spinoza, Baruch de
- Stalin, Joseph
- Steno, Nicolaus
- Sterne, Laurence
- Synge, John Lighton
- Taylor, Frederick W.
- Teilhard de Chardin, Pierre
- Thales
- Thucydides
- Tillich, Paul
- Toffler, Alvin
- Tolkien, J. R. R.
- Tolstoy, Leo Nikolaevich
- Tylor, Edward Burnett
- Unamuno y Jugo, Miguel de
- Verne, Jules
- Wagner, Richard
- Weber, Max
- Wegener, Alfred
- Wells, H. G.
- White, Leslie A.
- Whitehead, Alfred North
- William of Conches
- William of Ockham
- Woolf, Virginia
- Xenophanes
- Yeats, William Butler
- Zara Yacob
- Zeno of Elea
- Zoroaster
- Zurvan
- Biology/Evolution
- Aging
- Anaximander
- Anthropology
- Archaeology
- Archaeopteryx
- Bergson, Henri
- Birth Order
- Birthrates, Human
- Catastrophism
- Chambers, Robert
- Change
- Clocks, Biological
- Coelacanths
- Consciousness
- Creationism
- Cretaceous
- Cryonics
- Cryptozoology
- Cybertaxonomy
- Darwin and Aristotle
- Darwin and Nietzsche
- Darwin, Charles
- Dating Techniques
- Decay, Organic
- Decay, Radioactive
- Design, Intelligent
- Dinosaurs
- Diseases, Degenerative
- DNA
- Duration
- Dying and Death
- Ecology
- Economics
- Empedocles
- Enlightenment, Age of
- Eternal Recurrence
- Evidence of Human Evolution, Interpreting
- Evolution, Chemical
- Evolution, Cosmic
- Evolution, Cultural
- Evolution, Issues in
- Evolution, Organic
- Evolution, Social
- Extinction
- Extinction and Evolution
- Extinctions, Mass
- Fertility Cycle
- Foraminifers
- Fossil Fuels
- Fossil Record
- Fossils and Artifacts
- Fossils, Interpretations of
- Fossils, Living
- Geologic Timescale
- Geological Column
- Geology
- Gerontology
- Gestation Period
- Gingko Trees
- Global Warming
- Haeckel, Ernst
- Harris, Marvin
- Healing
- Heartbeat
- Hibernation
- Hominid-Pongid Split
- Huxley, Thomas Henry
- Incubation
- Knezević, Bozidar
- Kropotkin, Peter A.
- K-T Boundary
- La Brea Tar Pits
- Laetoli Footprints
- Lamarck, Jean-Baptiste de
- Language, Evolution of
- Language, Tree of
- Life Cycle
- Life, Origin of
- Longevity
- Lucretius
- Malthus, Thomas
- Maturation
- Medicine, History of
- Memory
- Metamorphosis, Insect
- Morgan, Lewis Henry
- Neogene
- Nietzsche, Friedrich
- Nuclear Winter
- Oparin, A. I.
- Paleogene
- Paleontology
- Panbiogeography
- Permian Extinction
- Photosynthesis
- Phylogeny
- Piltdown Man Hoax
- Renan, Joseph Ernest
- Saltationism and Gradualism
- Scopes "Monkey Trial" of 1925
- Spencer, Herbert
- Stars, Evolution of
- Stromatolites
- Teilhard de Chardin, Pierre
- Teleology
- Thaies
- Time, Prehistoric
- Time-Release Medications
- Transhumanism
- Trees
- Trilobites
- Tylor, Edward Burnett
- Unamuno y Jugo, Miguel de
- Uniformitarianism
- Universe, Evolving
- White, Leslie A.
- Xenophanes
- Culture/History
- Adam, Creation of
- Alexander the Great
- Altamira Cave
- Anthropology
- Apocalypse
- Archaeology
- Armageddon
- Astrolabes
- Attila the Hun
- Beowulf
- Bible and Time
- Bonaparte, Napoleon
- Boucher de Perthes, Jacques
- Buddhism, Mahayana
- Buddhism, Theravada
- Buddhism, Zen
- Caesar, Gaius Julius
- Calendar, Aztec
- Calendar, Egyptian
- Calendar, Ethiopian
- Calendar, Gregorian
- Calendar, Islamic
- Calendar, Julian
- Calendar, Mayan
- Calendar, Roman
- Calendars, Asian
- Calendars, Megalithic
- Calendars, Tribal
- Catacombs
- Chaco Canyon
- Charlemagne
- Chaucer, Geoffrey
- Chauvet Cave
- Christianity
- Clock, Doomsday
- Clocks, Mechanical
- Coins, Ancient
- Coleridge, Samuel Taylor
- Columbus, Christopher
- Confucianism
- Creation, Myths of
- Creationism
- Creativity
- Cronus (Kronos)
- Dalí, Salvador
- Democracy
- Diaries
- Divination
- Dracula, Legend of
- Dreamtime, Aboriginal
- Ecclesiastes, Book of
- Ecology
- Economics
- Education and Time
- Egypt, Ancient
- Eliot, T. S.
- Elixir of Life
- End-Time, Beliefs in
- Enlightenment, Age of
- Evolution, Cultural
- Evolution, Social
- Fatalism
- Father Time
- Film and Photography
- Flaubert, Gustave
- Fossils and Artifacts
- Frankenstein, Legend of
- Futurology
- Gehlen, George
- Genesis, Book of
- Genghis Khan
- Gibran, Kahlil
- Global Warming
- Globalization
- Goethe, Johann Wolfgang von
- Gospels
- Grim Reaper
- Hammurabi, Codex of
- Harris, Marvin
- Herodotus
- Hesiod
- Hinduism, Mimamsa-Vedanta
- Hinduism, Nyaya-Vaisesika
- Hinduism, Samkhya-Yoga
- Histories, Alternative
- History, End of
- Hitler, Adolf
- Homer
- Hourglass
- Humanism
- Ides of March
- Industrial Revolution
- Information
- Islam
- Jainism
- Janus
- Joyce, James
- Judaism
- Kabbalah
- Language
- Lascaux Cave
- Law
- Libraries
- Longevity
- Luther, Martin
- Magdalenian Bone Calendars
- Magna Carta
- Mann, Thomas
- Marx, Karl
- Materialism
- Media and Time
- Medicine, History of
- Metanarrative
- Michelangelo Buonarroti
- Migrations
- Milton, John
- Morality
- Morgan, Lewis Henry
- Moses
- Mummies
- Museums
- Music
- Mythology
- Navajo
- Nero, Emperor of Rome
- Nietzsche, Friedrich
- Noah
- Nostradamus
- Novels, Historical
- Novels, Time in
- Olduvai Gorge
- Omens
- Ovid
- Peloponnesian War
- Petrarch, Francesco
- Philo Judaeus
- Philosopher's Stone
- Photography, Time-Lapse
- Planetariums
- Plutarch
- Poetry
- Pompeii
- Postmodernism
- Predestination
- Predeterminism
- Presocratic Age
- Progress
- Prophecy
- Proust, Marcel
- Pueblo
- Punctuality
- Qur'an
- Rameses II
- Rapa Nui (Easter Island)
- Redemption
- Reincarnation
- Religions and Time
- Revelation, Book of
- Rip Van Winkle, Tale of
- Rites of Passage
- Rome, Ancient
- Rosetta Stone
- Sandman
- Sandpainting
- Satellites, Artificial and Natural
- Scopes "Monkey Trial" of 1925
- Seven Wonders of the Ancient World
- Shakespeare's Sonnets
- Shangri-La, Myth of
- Shinto
- Simmel, Georg
- Sisyphus, Myth of
- Stalin, Joseph
- Statute of Limitations
- Stonehenge
- Sufism
- Sundials
- Taoism (Daoism)
- Technology Assessment
- Telescopes
- Terrorism
- Time and Computers
- Time Capsules
- Time Machine
- Time Management
- Time Poverty
- Time, Historic
- Time, Measurements of
- Time, Prehistoric
- Time, Sacred
- Time, Teaching
- Timepieces
- Totem Poles
- Transportation
- Tylor, Edward Burnett
- Ur
- Utopia and Dystopia
- Vampires
- Verne, Jules
- Voodoo
- Wagner, Richard
- Wahhābism
- Watches
- Weapons
- Wells, H. G.
- Werewolves
- White, Leslie A.
- Wine
- Witching Hour
- Woolf, Virginia
- Youth, Fountain of
- Zeitgeist
- Geology/Paleontology
- Altamira Cave
- Anthropology
- Archaeology
- Archaeopteryx
- Aristotle
- Boucher de Perthes, Jacques
- Calendars, Megalithic
- Catacombs
- Catastrophism
- Chambers, Robert
- Chauvet Cave
- Chicxulub Crater
- Chronostratigraphy
- Coelacanths
- Creationism
- Cretaceous
- Cryptozoology
- Cybertaxonomy
- Darwin, Charles
- Dating Techniques
- Decay, Radioactive
- Dinosaurs
- Earth, Age of
- Erosion
- Evidence of Human Evolution, Interpreting
- Evolution, Issues in
- Evolution, Organic
- Extinction
- Extinction and Evolution
- Extinctions, Mass
- Foraminifers
- Fossil Fuels
- Fossil Record
- Fossils and Artifacts
- Fossils, Interpretations of
- Fossils, Living
- Geologic Timescale
- Geological Column
- Geology
- Gingko Trees
- Glaciers
- Gosse, Philip Henry
- Grand Canyon
- Haeckel, Ernst
- Hominid-Pongid Split
- Hutton, James
- Huxley, Thomas Henry
- Ice Ages
- K-T Boundary
- La Brea Tar Pits
- Laetoli Footprints
- Lamarck, Jean-Baptiste de
- Lascaux Cave
- Life, Origin of
- Lyell, Charles
- Museums
- Old Faithful
- Olduvai Gorge
- Oparin, A. I.
- Paleogene
- Paleontology
- Paley, William
- Panbiogeography
- Pangea
- Permian Extinction
- Phylogeny
- Piltdown Man Hoax
- Plate Tectonics
- Saltationism and Gradualism
- Scopes "Monkey Trial" of 1925
- Sedimentation
- Smith, William
- Spencer, Herbert
- Steno, Nicolaus
- Stratigraphy
- Stromatolites
- Synchronicity, Geological
- Teilhard de Chardin, Pierre
- Time, Perspectives of
- Time, Planetary
- Time, Prehistoric
- Trilobites
- Uniformitarianism
- Wegener, Alfred
- Xenophanes
- Philosophy
- Abelard, Peter
- Albertus Magnus
- Alexander, Samuel
- Anaximander
- Anaximines
- Anselm of Canterbury
- Anthropic Principle
- Apollodorus of Athens
- Aquinas, Saint Thomas
- Aristotle
- Aristotle and Plato
- Atheism
- Augustine of Hippo, Saint
- Avicenna
- Bakhtin, Mikhail
- Becoming and Being
- Bede the Venerable, Saint
- Bergson, Henri
- Berkeley, George
- Boethius, Anicius
- Bruno and Cusa
- Bruno, Giordano
- Calvin, John
- Campanella, Tommaso
- Comte, Auguste
- Critical Thought and Time
- Cronus (Kronos)
- Darwin and Heraclitus
- Darwin and Nietzsche
- Deleuze, Gilles
- Demiurge
- Democritus
- Derrida, Jacques
- Descartes, René
- Dialectics
- Diderot, Denis
- Dilthey, Wilhelm
- Dogen Zen
- Dostoevsky, Fyodor M.
- Duns Scotus, John
- Eckhart, Meister
- Einstein and Newton
- Einstein, Albert
- Eliade, Mircea
- Empedocles
- End-Time, Beliefs in
- Engels, Friedrich
- Enlightenment, Age of
- Epistemology
- Eriugena, Johannus Scotus
- Eternal Recurrence
- Eternity
- Ethics
- Evil and Time
- Existence
- Existentialism
- Experiments, Thought
- Farber, Marvin
- Fatalism
- Feuerbach, Ludwig
- Fichte, Johann Gottlieb
- Gödel, Kurt
- Gehlen, Arnold
- Gibran, Kahlil
- Goethe, Johann Wolfgang von
- Gosse, Philip Henry
- Haeckel, Ernst
- Hartshorne, Charles
- Hawking, Stephen
- Hegel and Kant
- Hegel, Georg Wilhelm Friedrich
- Heidegger, Martin
- Heraclitus
- Herder, Johann Gottfried von
- Humanism
- Hume, David
- Husserl, Edmund
- Idealism
- Infinity
- Intuition
- Jaspers, Karl
- Kant, Immanuel
- Kierkegaard, S⊘ren Aabye
- Knezevi', Bozidar
- Kropotkin, Peter A.
- Leibniz, Gottfried Wilhelm von
- Lenin, Vladimir Ilich
- Logical Depth
- Lucretius
- Mach, Ernst
- Machiavelli, Niccolo
- Marx, Karl
- Materialism
- Maxwell's Demon
- McTaggart, John M. E.
- Mellor, David Hugh
- Merleau-Ponty, Maurice
- Metaphysics
- Morality
- More, Saint Thomas
- Nabokov, Vladimir
- Newton and Leibniz
- Newton, Isaac
- Nicholas of Cusa (Cusanus)
- Nietzsche and Heraclitus
- Nietzsche, Friedrich
- Nothingness
- Now, Eternal
- Ontology
- Ovid
- Paley, William
- Parmenides of Elea
- Plato
- Plotinus
- Poincaré, Henri
- Postmodernism
- Predestination
- Predeterminism
- Presocratic Age
- Prigogine, Ilya
- Progress
- Rahner, Karl
- Rawls, John
- Regress, Infinite
- Ricoeur, Paul
- Rousseau, Jean-Jacques
- Russell, Bertrand
- Santayana, George
- Scheler, Max
- Schelling, Friedrich W. J. von
- Schopenhauer and Kant
- Schopenhauer, Arthur
- Simmel, Georg
- Sloterdijk, Peter
- Solipsism
- Spencer, Herbert
- Spinoza, Baruch de
- Structuralism
- Teilhard de Chardin, Pierre
- Teleology
- Thaies
- Theodicy
- Tillich, Paul
- Time, Cyclical
- Time, Illusion of
- Time, Imaginary
- Time, Logics of
- Time, Nonexistence of
- Time, Objective Flux of
- Time, Observations of
- Time, Operational Definition of
- Time, Perspectives of
- Time, Phenomenology of
- Time, Problems of
- Time, Real
- Time, Relativity of
- Time, Subjective Flow of
- Unamuno y Jugo, Miguel de
- Values and Time
- Virtual Reality
- Weber, Max
- Whitehead, Alfred North
- William of Conches
- William of Ockham
- Xenophanes
- Zeno of Elea
- Zoroaster
- Zurvan
- Physics/Chemistry
- Astrolabes
- Attosecond and Nanosecond
- Aurora Borealis
- Böhm, David
- Big Bang Theory
- Big Crunch Theory
- Black Holes
- Calendar, Astronomical
- Causality
- Chemical Reactions
- Chemistry
- Chronology
- Chronometry
- Clocks, Atomic
- Clocks, Mechanical
- Comets
- Copernicus, Nicolaus
- Cosmogony
- Cosmological Arguments
- Cosmology, Cyclic
- Cosmology, Inflationary
- Cryonics
- Dating Techniques
- Decay, Organic
- Decay, Radioactive
- Determinism
- DNA
- Dying and Death
- Earth, Age of
- Earth, Revolution of
- Earth, Rotation of
- Eclipses
- Einstein, Albert
- Entropy
- Equinoxes
- Eternity
- Event, First
- Evolution, Chemical
- Evolution, Issues in
- Finitude
- Forces, Four Fundamental
- Fossil Fuels
- Galilei, Galileo
- Gamow, George
- Global Warming
- Hawking, Stephen
- Heat Death, Cosmic
- Histories, Alternative
- Infinity
- Laplace, Marquis Pierre-Simon de
- Latitude
- Leap Years
- Lemaître, Georges Édouard
- Life, Origin of
- Light, Speed of
- Longitude
- Mach, Ernst
- Maxwell's Demon
- Meteors and Meteorites
- Moon, Age of
- Moon, Phases of
- Multiverses
- Nebular Hypothesis
- Newton, Isaac
- Nuclear Winter
- Observatories
- Oparin, A. I.
- Pendulums
- Photography, Time-Lapse
- Photosynthesis
- Planck Time
- Planetariums
- Planets
- Planets, Extrasolar
- Planets, Motion of
- Prime Meridian
- Pulsars and Quasars
- Quantum Mechanics
- Relativity, General Theory of
- Relativity, Special Theory of
- Satellites, Artificial and Natural
- Seasons, Change of
- Singularities
- Solstice
- Space
- Space and Time
- Space Travel
- Space, Absolute
- Spacetime Continuum
- Spacetime Curvature
- Spontaneity
- Stars, Evolution of
- Sun, Age of
- Sunspots, Cycle of
- Teleportation
- Telescopes
- Thanatochemistry
- Tides
- Time and Computers
- Time and Universes
- Time Dilation and Length Contraction
- Time Machine
- Time, Absolute
- Time, Arrow of
- Time, Asymmetry of
- Time, Cosmic
- Time, Emergence of
- Time, End of
- Time, Galactic
- Time, Historic
- Time, Linear
- Time, Measurements of
- Time, Planetary
- Time, Real
- Time, Relativity of
- Time, Reversal of
- Time, Sidereal
- Time, Symmetry of
- Time, Teaching
- Time, Units of
- Time, Universal
- Timelines
- Timescales, Physical
- Timetables
- Twins Paradox
- Universe, Age of
- Universe, Closed or Open
- Universe, Contracting or Expanding
- Universe, End of
- Universe, Evolving
- Universe, Origin of
- Universes, Baby
- White Holes
- Worlds, Possible
- Wormholes
- Psychology/Literature
- Alighieri, Dante
- Amnesia
- Aristotle
- Asimov, Isaac
- Augustine of Hippo, Saint
- Beowulf
- Bergson, Henri
- Berkeley, George
- Bible and Time
- Bradbury, Ray
- Carroll, Lewis
- Chronotopes
- Clarke, Arthur C.
- Cognition
- Coleridge, Samuel
- Consciousness
- Creativity
- Critical Period Hypothesis
- Critical Reflection and Time
- Déjà Vu
- Dalí, Salvador
- Darwin, Charles
- Descartes, René
- Determinism
- Diaries
- Donne, John
- Dostoevsky, Fyodor M.
- Doyle, Arthur Conan
- Dreams
- Dreamtime, Aboriginal
- Duration
- Durkheim, Emile
- Dying and Death
- Education and Time
- Eliade, Mircea
- Eliot, T. S.
- Emotions
- End-Time, Beliefs in
- Epistemology
- Ethics
- Existentialism
- Experiments, Thought
- Fatalism
- Flashbacks
- Flaubert, Gustave
- Gibran, Kahlil
- Goethe, Johann Wolfgang von
- Hegel, Georg Wilhelm Friedrich
- Herodotus
- Hesiod
- Homer
- Humanism
- Hume, David
- Husserl, Edmund
- Ides of March
- Immortality, Personal
- Information
- Intuition
- Jaspers, Karl
- Joyce, James
- Kabbalah
- Kafka, Franz
- Kant, Immanuel
- Kierkegaard, S⊘ren Aabye
- Language
- Leibniz, Gottfried Wilhelm von
- Libraries
- Logical Depth
- Machiavelli, Niccolo
- Mann, Thomas
- Memory
- Merleau-Ponty, Maurice
- More, Saint Thomas
- Music
- Mysticism
- Mythology
- Nietzsche, Friedrich
- Nirvana
- Nostradamus
- Nothingness
- Novels, Historical
- Novels, Time in
- Now, Eternal
- Omens
- Orwell, George
- Ovid
- Perception
- Petrarch, Francesco
- Phi Phenomenon
- Philo Judaeus
- Plato
- Plutarch
- Poetry
- Predestination
- Predeterminism
- Prophecy
- Proust, Marcel
- Psychology and Time
- Punctuality
- Renan, Joseph Ernest
- Rip Van Winkle, Tale of
- Rosetta Stone
- Rousseau, Jean-Jacques
- Schopenhauer, Arthur
- Senescence
- Shakespeare's Sonnets
- Shangri-La, Myth of
- Sisyphus, Myth of
- Sleep
- Solipsism
- Sterne, Laurence
- Tantalus
- Terrorism
- Time, Illusion of
- Time, Imaginary
- Time, Perspectives of
- Time, Phenomenology of
- Time, Subjective Flow of
- Time, Teaching
- Tolstoy, Leo Nikolaevich
- Unamuno y Jugo, Miguel de
- Values and Time
- Verne, Jules
- Virtual Reality
- Voodoo
- Wagner, Richard
- Wells, H. G.
- Woolf, Virginia
- Yeats, William Butler
- Zeitgeist
- Religion/Theology
- Abelard, Peter
- Adam, Creation of
- Afterlife
- Albertus Magnus
- Alexander, Samuel
- Alighieri, Dante
- Angels
- Anselm of Canterbury
- Apocalypse
- Aquinas and Aristotle
- Aquinas and Augustine
- Aquinas, Saint Thomas
- Armageddon
- Augustine of Hippo, Saint
- Barth, Karl
- Becoming and Being
- Bede the Venerable, Saint
- Bible and Time
- Bruno and Cusa
- Bruno, Giordano
- Buddhism, Mahayana
- Buddhism, Theravada
- Buddhism, Zen
- Calvin, John
- Catacombs
- Christianity
- Confucianism
- Creation, Myths of
- Creationism
- Demiurge
- Design, Intelligent
- Destiny
- Devils
- Divination
- Dogen, Zen
- Duns Scotus, John
- Ecclesiastes, Book of
- Eckhart, Meister
- End-Time, Beliefs in
- Eriugena, Johannus Scotus
- Eschatology
- Ethics
- Evil and Time
- Existentialism
- Feuerbach, Ludwig
- Genesis, Book of
- God and Time
- God as Creator
- God, Sensorium of
- Gospels
- Gosse, Philip Henry
- Hartshorne, Charles
- Hegel, Georg Wilhelm Friedrich
- Hinduism, Mimamsa-Vedanta
- Hinduism, Nyaya-Vaisesika
- Hinduism, Samkhya-Yoga
- Humanism
- Hume, David
- Idealism
- Immortality, Personal
- Islam
- Jainism
- Judaism
- Kabbalah
- Kant, Immanuel
- Kierkegaard, S⊘ren Aabye
- Last Judgment
- Luther, Martin
- Maritain, Jacques
- Marx, Karl
- Maximus the Confessor, Saint
- Metaphysics
- More, Saint Thomas
- Moses
- Mysticism
- Mythology
- Nicholas of Cusa (Cusanus)
- Nietzsche, Friedrich
- Nirvana
- Noah
- Ontology
- Paley, William
- Parousia
- Philosophy
- Predestination
- Predeterminism
- Prophecy
- Qur'an
- Rahner, Karl
- Redemption
- Reincarnation
- Religions and Time
- Renan, Joseph Ernest
- Revelation, Book of
- Salvation
- Sankara, Shri Adi
- Satan and Time
- ShintŌ
- Sin, Original
- Spinoza, Baruch de
- Star of Bethlehem
- Sufism
- Taoism (Daoism)
- Teilhard de Chardin, Pierre
- Theodicy
- Theology, Process
- Tillich, Paul
- Time, Sacred
- Unamuno y Jugo, Miguel de
- Voodoo
- Watchmaker, God as
- Whitehead, Alfred North
- Xenophanes
- Zoroaster
- Theories/Concepts
- Anaximander
- Anaximines
- Anthropic Principle
- Apocalypse
- Aquinas and Aristotle
- Aquinas and Augustine
- Aristotle and Plato
- Becoming and Being
- Big Bang Theory
- Big Crunch Theory
- Black Holes
- Bruno and Cusa
- Catastrophism
- Causality
- Change
- Cosmogony
- Cosmological Arguments
- Cosmology, Cyclic
- Cosmology, Inflationary
- Creation, Myths of
- Creationism
- Creativity
- Critical Reflection and Time
- Cronus
- Cryonics
- Darwin and Aristotle
- Darwin and Nietzsche
- Demiurge
- Democracy
- Design, Intelligent
- Destiny
- Determinism
- Dialectics
- Duration
- Einstein and Newton
- Empedocles
- Engels, Friedrich
- Enlightenment, Age of
- Entropy
- Eschatology
- Eternal Recurrence
- Eternity
- Ethics
- Evolution, Issues in
- Evolution, Organic
- Existentialism
- Experiments, Thought
- Extinction
- Extinction and Evolution
- Extinctions, Mass
- Fatalism
- Finitude
- Fossils, Interpretations of
- Futurology
- Globalization
- God and Time
- God as Creator
- God, Sensorium of
- Hawking and Einstein
- Heat Death, Cosmic
- Hegel and Kant
- Histories, Alternative
- History, End of
- Humanism
- Idealism
- Immortality, Personal
- Infinity
- Kropotkin, Peter A.
- Languages, Tree of
- Last Judgment
- Latitude
- Life, Origin of
- Light, Speed of
- Logical Depth
- Longitude
- Maha-Kala (Great Time)
- Marx, Karl
- Materialism
- Media and Time
- Metaphysics
- Morality
- Multiverses
- Mysticism
- Nebular Hypothesis
- Newton and Leibniz
- Nietzsche and Heraclitus
- Nirvana
- Nothingness
- Now, Eternal
- Nuclear Winter
- Ontology
- Paleogene
- Panbiogeography
- Pangea
- Parousia
- Permian Extinction
- Planck Time
- Plate Tectonics
- Postmodernism
- Predestination
- Predeterminism
- Presocratic Age
- Prime Meridian
- Progress
- Punctuality
- Quantum Mechanics
- Redemption
- Regress, Infinite
- Reincarnation
- Relativity, General Theory of
- Relativity, Special Theory of
- Saltationism and Gradualism
- Schopenhauer and Kant
- Singularities
- Sisyphus, Myth of
- Solipsism
- Space, Absolute
- Spacetime Continuum
- Spacetime, Curvature of
- Spencer, Herbert
- Structuralism
- Teleology
- Thales
- Theodicy
- Time and Computers
- Time and Universes
- Time Zones
- Time, Absolute
- Time, Arrow of
- Time, Cyclical
- Time, Emergence of
- Time, End of
- Time, Linear
- Time, Nonexistence of
- Time, Real
- Time, Relativity of
- Time, Reversal of
- Time, Sacred
- Time, Teaching
- Time, Units of
- Timelines
- Timescales, Physical
- Timetables
- Transhumanism
- Uniformitarianism
- Universe, Closed or Open
- Universe, Contracting or Expanding
- Universe, End of
- Universe, Evolving
- Universe, Origin of
- Universes, Baby
- Utopia and Dystopia
- Values and Time
- Virtual Reality
- Watchmaker, God as
- White Holes
- Worlds, Possible
- Wormholes
- Xenophanes
- Youth, Fountain of
- Zeitgeist
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