William David Ross
1935 · Good
€25
George Santayana
1920 · Very good
€40
Brooks Adams
1888 · Very good
€65
Alfred Weber, Frank Thilly
1902 · Good
€20
Georg Simmel, Georg Simmel
1907 · Very good
€135
Robert Blakey
1877 · Very good
€85
John Stuart Mill
1883 · Good
€55
Peter Kropotkin
1925 · Very good
€35
Patañjali.
1893 · Good
€55
Bādarāyaṇa.
1908 · Good
€70
Austin, John, John Austin
1896 · Fair
€25
Francis Bacon
1621 · Very good
€1,550
Peter Kropotkin
1886 · Very good
€60
George Berkeley, George B Berkeley
1717 · Good
€200
Ernst Troeltsch
1916 · Very good
€55
Arthur Berriedale Keith
1935 · Very good
€65
Georg Wilhelm Friedrich Hegel
1935 · Good
€100
Sir William Osler
1916 · Good
€85
Adam Smith, Andrew Skinner
1790 · Good
€310
F. Max Müller, Viggo Fausbll
1911 · Fair
€15
John William Draper
1887 · Good
€115
Ralph Waldo Emerson
1808 · Very good
€205
John Stuart Mill
1870 · Good
€160
William Henry Hadow
1893 · Good
€85
Dugald Stewart
1815 · Good
€90
Arnold J. Toynbee
1935 · Fair
€15
Margery Williams Bianco
1935 · Good
€20
Bavinck, Herman
1925 · Very good · NL
€25
Plato
1809 · Good
€205
Friedrich Nietzsche
1915 · Fair
€25
Harriet Martineau
1839 · Very good
€160
Friedrich Engels
1905 · Fine
€80
Plato
1549 · Good
€540
William James
1917 · Very good
€55
Jean-Baptiste de Boyer marquis d'Argens
1740 · Good
€235
Miguel de Unamuno
1935 · Good
€25
Jean-Antoine-Nicolas de Caritat marquis de Condorcet
1816 · Good
€270
Xenophon
1554 · Good
€645
Edmund Husserl
1913 · Good
€45
Dasgupta, Surendranath
1935 · Good
€20
Isaac Husik
1923 · Very good
€30
Eduard Zeller
1881 · Very good
€140
H. G. Wells
1935 · Very good
€40
Florence Nightingale
1890 · Good
€35
Herbert Spencer
1894 · Very good
€185
Claude Bernard
1870 · Very good
€130
Herbert Spencer
1870 · Good
€115
Bertrand Russell
1935 · Good
€90
John Dewey
1920 · Very good
€40
Thomas Reid, Knud Haakonssen
1788 · Very good
€235
Georg Wilhelm Friedrich Hegel
1872 · Good
€125
Francisco de Vitoria
1920 · Good
€20
Anselm of Canterbury, Anselm
1928 · Fair
€35
Ibn Khaldūn, عبد الرحمن ابن خلدون Abdel Rahman Ibn Khaldun
1863 · Good
€75
Muhammad ibn Abd al-Malik Ibn Tufayl
1751 · Very good
€315
Rudolf Steiner, David W. Wood
1935 · Good
€20
David Hume
1763 · Good
€395
George Santayana
1920 · Very good
€100
Sadānanda Yogīndra, George Adolphus Jacob
1834 · Good
€225
Etienne Bonnot de Condillac, Etienne Bonnot De Condillac
1793 · Good
€765