Arthur Schopenhauer
1868 · Good
€40
Adam Storey Farrar
1879 · Good
€45
René Descartes
1646 · Fair
€1,215
Adam Smith, Andrew Skinner
1790 · Good
€310
Marcus Aurelius
1626 · Very good
€825
Henri Poincaré, Francis Maitland
1907 · Good
€60
Thomas Troward
1922 · Good
€30
Henri Bergson, Nancy Margaret Paul
1902 · Good
€45
Mary Whiton Calkins
1910 · Very good
€35
Paul Henri Thiry baron d'Holbach
1775 · Good
€365
Alfred Klemmt, George Berkeley
1740 · Good
€755
Ralph Waldo Emerson
1808 · Very good
€205
Seneca the Younger
1531 · Fair
€1,440
Joseph B. Mayor
1886 · Very good
€70
Francis Hutcheson, Wolfgang Leidhold
1725 · Good
€345
Maria Edgeworth
1839 · Fine
€205
Paul Carus
1893 · Good
€95
Anselm of Canterbury, Anselm
1928 · Fair
€35
Arnold, Thomas
1845 · Fair
€55
Stephan Körner
1799 · Very good
€280
Adam Smith
1798 · Very good
€500
Frederick Denison Maurice
1878 · Very good
€135
Jean-Baptiste de Boyer marquis d'Argens
1740 · Good
€235
Maurice Maeterlinck
1906 · Very good
€45
Josiah Royce
1912 · Very good
€95
Edward Carpenter
1935 · Good
€40
Samuel Smiles
1804 · Very good
€315
Samuel Taylor Coleridge
1810 · Good
€310
Francis Bacon
1930 · Fair
€45
Benedictus de Spinoza, Wolfgang Bartuschat
1896 · Good
€40
Friedrich Engels
1905 · Fine
€80
Sir William Hamilton, 9th Baronet
1859 · Good
€75
Henry Osborn Taylor
1917 · Good
€65
Adam Ferguson
1774 · Fair
€325
Ludwig Feuerbach
1893 · Good
€115
Norman Kemp Smith
1924 · Very good
€115
Maurice Maeterlinck
1935 · Good
€40
Immanuel Kant, Alain Renaut
1807 · Very good
€330
Thomas Aquinas
1869 · Good
€70
George Santayana, Colin D. Standish
1935 · Good
€55
Ernst Cassirer, Claus Rosenkranz
1935 · Good
€25
Jean-Antoine-Nicolas de Caritat marquis de Condorcet
1816 · Good
€270
Paul Klee
1935 · Very good
€25
Friedrich Nietzsche
1925 · Good
€50
Sir Muhammad Iqbal
1913 · Fine
€175
Oliver Wendell Holmes, Sr.
1910 · Good
€60
David Hume
1763 · Good
€395
Jacob Burckhardt
1935 · Very good
€80
Rudolf Steiner
1932 · Fine
€40
Sextus Empiricus.
1887 · Good
€40
Parmenides.
1902 · Fair
€35
Plato
1843 · Fair
€60
John Ray, John Ray
1717 · Very good
€815
Sigmund Freud
1906 · Good
€25
Nicolas Malebranche
1693 · Very good
€600
E. M. Forster
1925 · Good
€35
Brooks Adams
1888 · Very good
€65
Arthur M. Schlesinger
1924 · Very good
€45
Julien Offray de La Mettrie, Bernard A. Laska
1770 · Good
€370
Jacques Maritain
1935 · Good
€115