Friedrich Engels
1905 · Fine
€80
Rudolf Steiner
1932 · Fine
€40
Søren Kierkegaard, Bruce H. Kirmmse
1877 · Fine
€215
Eduard von Hartmann
1883 · Fine
€130
Josiah Royce
1928 · Fine
€125
Aristotle
1893 · Fine
€175
Klaas Johan Pen
1935 · Fine · NL
€35
Frederic William Farrar
1905 · Fine
€35
Mark Twain
1919 · Fine
€65
August Neander
1872 · Fine
€105
Erwin Madelung
1935 · Fine
€40
Thomas Henry Huxley
1897 · Fine
€135
Abraham Kuyper
1919 · Fine · NL
€125
Ernst Heinrich Philipp August Haeckel
1900 · Fine
€30
Nicolass Muller
1915 · Fine · NL
€35
Conrad Busken Huet
1878 · Fine · NL
€90
Sir Muhammad Iqbal
1913 · Fine
€175
Alfred North Whitehead
1930 · Fine
€40
David Hume
1903 · Fine
€50
John Bernhard Stallo
1883 · Fine
€55
Frederik Hendrik Neiszen
1935 · Fine · NL
€110
Emanuel Hiel
1901 · Fine · NL
€130
Guillaume Groen van Prinsterer
1903 · Fine · NL
€30
Willem Pieter Cornelis Knuttel
1904 · Fine · NL
€80
Arthur van Schendel
1921 · Fine · NL
€35
Emile Ferrière
1909 · Fine · NL
€115
Abraham Kuyper
1880 · Fine · NL
€110
Antoni Christiaan Winand Staring
1900 · Fine · NL
€30
A. F. Krull
1927 · Fine · NL
€80
Paul Drude
1919 · Fine
€160
Giacomo Leopardi
1921 · Fine
€125
Herbert Spencer
1862 · Fine
€105
Bartholomeus Johannes Westerbeek van Eerten
1923 · Fine · NL
€100
Ika A. Thomése
1935 · Fine · NL
€35
James Fergusson, James Fergusson
1863 · Fine
€60
Abraham Kuyper
1914 · Fine · NL
€140
F. Matthias Alexander
1935 · Fine
€35
Jacob van Lennep
1915 · Fine · NL
€115
Jan ten Brink
1883 · Fine · NL
€55
Miguel de Unamuno
1900 · Fine
€70
Robert Jacobus Fruin
1928 · Fine · NL
€55
Friedrich Nietzsche
1898 · Fine
€90
Felix von Niemeyer
1897 · Fine
€120
Eduard Strasburger
1924 · Fine
€40
Ivan Sergeevich Turgenev
1894 · Fine
€65
H. Milne-Edwards
1866 · Fine · NL
€65
Cyriel Buysse
1926 · Fine · NL
€140
Augustine of Hippo, Philip Schaff
1933 · Fine
€30
Jean-Jacques Rousseau
1927 · Fine
€30
Edward Bernard Koster
1916 · Fine · NL
€90
Camille Flammarion
1887 · Fine
€80
Leonard Anthony Springer
1915 · Fine · NL
€30
August Heinrich Hoffmann von Fallersleben
1872 · Fine · NL
€85
F. Max Müller
1889 · Fine
€115
Fiódor Dostoievski
1895 · Fine
€145
Cornelis Lekkerkerker
1935 · Fine · NL
€95
McDougall, William
1917 · Fine
€100
Sachs, Julius
1902 · Fine
€80
Luther Holden
1865 · Fine
€130
Jan Hendrik Holwerda
1929 · Fine · NL
€60