John Caird
1884 · Fair
€25
Paul Carus
1893 · Good
€95
Immanuel Kant
1885 · Good
€190
Immanuel Kant
1888 · Very good
€120
Clemens Brentano
1894 · Very good
€45
Aristotle
1893 · Fine
€175
Denison Olmsted
1880 · Very good
€135
Josiah Royce
1898 · Very good
€75
Thomas Aquinas
1869 · Good
€70
Thomas Hill Green
1886 · Good
€160
Salomon Munk, S. (Salomon) Munk
1857 · Very good
€55
Herbert Spencer
1882 · Very good
€105
Plato
1879 · Good
€65
René Descartes
1860 · Fair
€55
Plato
1864 · Good
€100
Joseph B. Mayor
1886 · Very good
€70
F. H. Bradley
1891 · Fair
€30
A. Privat-Deschanel
1889 · Good
€55
A. Privat-Deschanel
1875 · Very good
€80
Schwegler, Albert
1864 · Fine
€120
Benedictus de Spinoza
1899 · Very good
€50
Plato
1883 · Fair
€85
F. Max Müller
1896 · Very good
€70
Eduard Zeller
1881 · Very good
€140
Rudolf Steiner
1898 · Fair
€25
Søren Kierkegaard
1884 · Good
€50
Plato
1889 · Good
€60
William Kingdon Clifford
1887 · Good
€115
Jacob Abbott
1864 · Fair
€40
John Burnet
1893 · Good
€35
R. G. Collingwood
1865 · Good
€45
Herbert Spencer
1867 · Good
€45
Brooks Adams
1897 · Fine
€190
Plato
1859 · Good
€80
Auguste Comte
1867 · Fair
€50
Johannes Hermanus Gunning
1876 · Very good · NL
€110
Benedictus de Spinoza, Wolfgang Bartuschat
1896 · Good
€40
Frederick Denison Maurice
1878 · Very good
€135
Arthur Schopenhauer
1868 · Good
€40
John Herbert Sangster
1863 · Good
€75
Herbert Spencer
1894 · Very good
€185
Jacob Abbott
1862 · Very good
€115
Eduard Hanslick
1870 · Good
€60
Charles Elam
1869 · Good
€40
Georg Wilhelm Friedrich Hegel, Alan White
1875 · Good
€125
Dionysius Lardner
1875 · Very good
€50
Mikhail Aleksandrovich Bakunin
1892 · Good
€35
Sextus Empiricus.
1887 · Good
€40
Patañjali.
1893 · Good
€55
Karl Marx
1853 · Very good
€55
John Frederick William Herschel, George Foster
1864 · Very good
€85
Tito Vignoli
1885 · Good
€50
Adam Storey Farrar
1879 · Good
€45
Claude Bernard
1870 · Very good
€130
Eduard von Hartmann
1883 · Fine
€130
Denison Olmsted
1868 · Good
€60
Henry Longueville Mansel
1873 · Good
€60
Plato
1873 · Fair
€105
Sir Charles Bell
1859 · Good
€110
Denis Diderot
1862 · Fine
€270