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Spacetime, Curvature of
The concept of curvature can be approached through examination of two-dimensional surfaces. The floor of a room is flat, the surface of a ball or of the earth is curved. What does this mean more exactly? Let us imagine two wanderers ...
- 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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