Ken Wilber (1949)

A. C. Grayling (1949)

Terence McKenna (1946-2000)

Susan Haack (1945)

David K Lewis (1941-2001)

Laurence BonJour (19??)

Jacques Derrida (1930-2004)

Jaakko Hintikka (1929)

Humberto Maturana (1928)

Edmund Gettier (1927)

David Stove (1927-1994)

Hilary Putnam (1926)

David M Armstrong (1926)

Michael A. E. Dummett (1925)

Paul Feyerabend (1924-1994)

Richard Popkin (1923-2005)

Thomas Kuhn (1922-1996)

Imre Lakatos (1922-1974)

Michel Henry (1922-2002)

Norwood Russell Hanson (1922-1967)

P. F. Strawson (1919)

Peter Geach (1916)

G. H. von Wright (1916)

Roderick Milton Chisholm (1916-1999)

Paul Ricoeur (1913)

Wilfrid Sellars (1912-1989)

Norman Malcolm (1911-1990)

Alfred Jules Ayer (1910-1989)

Willard Van Orman Quine (1908-2000)

Maurice Merleau-Ponty (1908-1961)

Jan Patocka (1907-1977)

Carl Gustav Hempel (1905-1997)

Georges Canguilhem (1904-1996)

Bernard Lonergan (1904-1984)

Frank Plumpton Ramsey (1903-1930)

Mortimer Adler (1902-2001)

Karl Popper (1902-1994)

Ernest Nagel (1901-1985)

Hans Georg Gadamer (1900-2002)

Gilbert Ryle (1900-1976)

Henry Habberley Price (1899-1984)

Aldous Huxley (1894-1963)

Clarence Irving Lewis (1883-1964)

José Ortega y Gasset (1883-1955)

Moritz Schlick (1882-1936)

Jacques Maritain (1882-1973)

Curt John Ducasse (1881-1969)

P. D. Ouspensky (1878-1947)

Ernst Cassirer (1874-1945)

Max Scheler (1874-1928)

Alexander Bogdanov (1873-1928)

George Edward Moore (1873-1958)

Bertrand Russell (1872-1970)

Harold Arthur Prichard (1871-1947)

Leon Brunschvicg (1869-1944)

John Elof Boodin (1869-1950)

Kazimierz Twardowski (1866-1938)

Miguel de Unamuno (1864-1936)

George Santayana (1863-1952)

Heinrich Rickert (1863-1936)

Leopold Wertheimer (1862-1937)

Alfred North Whitehead (1861-1947)

Edmund Husserl (1859-1938)

Henri Poincaré (1854-1912)

Paul Gerhard Natorp (1854-1924)

Robert Adamson (1852-1902)

Hans Vaihinger (1852-1933)

Borden Parker Bowne (1847-1910)

F. H. Bradley (1846-1924)

William Kingdon Clifford (1845-1879)

Richard Avenarius (1843-1896)

Hermann Cohen (1842-1918)

William James (1842-1910)

Eduard von Hartmann (1842-1906)

Charles Sanders Peirce (1839-1914)

Franz Brentano (1838-1917)

Thomas Hill Green (1836-1882)

Edward Caird (1835-1908)

Eugen Dühring (1833-1921)

Shadworth Hodgson (1832-1912)

Leslie Stephen (1832-1904)

Gustav Teichmüller (1832-1888)

Friedrich Albert Lange (1828-1875)

Kuno Fischer (1824-1907)

Ludwig Büchner (1824-1899)

Moritz Lazarus (1824-1903)

Max Müller (1823-1900)

Henry Longueville Mansel (1820-1871)

Karl von Prantl (1820-1888)

Friedrich Harms (1819-1880)

Heinrich Czolbe (1819-1873)

Charles Renouvier (1815-1903)

James Frederick Ferrier (1808-1864)

Hermann Ulrici (1806-1884)

James Martineau (1805-1900)

Georg Wilhelm Friedrich Hegel (1770-1831)

Friedrich Schleiermacher (1768-1834)

Johann Gottlieb Fichte (1762-1814)

Johann Heinrich Abicht (1762-1816)

Christoph Gottfried Bardili (1761-1808)

Louis Gabriel Ambroise de Bonald (1754-1840)

Salomon Maimon (1753-1800)

Jacob Friedrich von Abel (1751-1829)

Friedrich Heinrich Jacobi (1743-1819)

Karl Leonhard Reinhold (1743-1819)

Johann Nicolas Tetens (1736-1807)

James Beattie (1735-1803)

Edmund Burke (1729-1797)

Immanuel Kant (1724-1804)

Paul Henri Dietrich d'Holbach (1723-1789)

Claude Adrien Helvetius (1715-1771)

Christian August Crusius (1715-1775)

Etienne Bonnot de Condillac (1714-1780)

Denis Diderot (1713-1784)

David Hume (1711-1776)

Thomas Reid (1710-1796)

Julien Offroy de La Mettrie (1707-1751)

David Hartley (1705-1757)

Anthony William Amo (1703-1759)

Francis Hutcheson (1694-1746)

Hermann Samuel Reimarus (1694-1768)

George Berkeley (1684-1753)

Arthur Collier (1680-1732)

Christian Wolff (1679-1754)

Giambattista Vico (1668-1744)

Claude Buffier (1661-1737)

Gottfried Wilhelm Leibniz (1646-1716)

Joseph Glanvill (1636-1680)

John Locke (1632-1704)

Baruch Spinoza (1632-1677)

John Ray (1627-1705)

René Descartes (1596-1650)

Pierre Gassendi (1592-1655)

Thomas Hobbes (1588-1679)

Marin Mersenne (1588-1648)

Edward Herbert (1583-1648)

Robert Fludd (1574-1637)

Tommaso Campanella (1568-1639)

Francis Bacon (1561-1626)

Francisco Sanches (1551-1623)

Michel de Montaigne (1533-1592)

Bernardino Telesio (1509-1588)

Wang Yangming (1472-1529)

William of Ockham (1287-1347)

John Duns Scotus (1266-1308)

Dignaga (5th century)

Porphyry (232-304)

Sextus Empiricus (200)

Agrippa (27-100)

Aenesidemus (100 bc)

Carneades (213-129 bc)

Timon (320-230 bc)

Arcesilaus of Pitane (315-242 bc)

Chuang Tzu (340-280 bc)

Epicurus (341-270 bc)

Pyrrho of Elis (365-270 bc)

Aristotle (384-322 bc)

Plato (428-347 bc)

Socrates (469-399 bc)

Empedocles (492-432 bc)

Heraclitus (540-475 bc)

Parmenides (515-450 bc)

Xenophanes (570-475 bc)