Aristotle
1893 · Fine
€175
Josiah Royce
1928 · Fine
€125
Friedrich Engels
1905 · Fine
€80
Miguel de Unamuno
1900 · Fine
€70
Guillaume Groen van Prinsterer
1903 · Fine · NL
€30
Victor Hugo
1858 · Fine
€95
Archimedes
1897 · Fine
€130
Emile Ferrière
1909 · Fine · NL
€115
Nicolass Muller
1915 · Fine · NL
€35
Emanuel Hiel
1901 · Fine · NL
€130
Eduard von Hartmann
1883 · Fine
€130
Abraham Kuyper
1919 · Fine · NL
€125
Aleksandr Sergeyevich Griboyedov
1857 · Fine
€200
Giacomo Leopardi
1921 · Fine
€125
Eduard Strasburger
1924 · Fine
€40
Friedrich Nietzsche
1898 · Fine
€90
George Barker Stevens
1930 · Fine
€60
Bavinck, Herman
1926 · Fine · NL
€90
F. Matthias Alexander
1935 · Fine
€35
Cyriel Buysse
1926 · Fine · NL
€140
Ernst Heinrich Philipp August Haeckel
1900 · Fine
€30
Ika A. Thomése
1935 · Fine · NL
€35
Klaas Johan Pen
1935 · Fine · NL
€35
Jan van Leeuwen
1935 · Fine · NL
€45
Ernst H. F. Meyer
1864 · Fine
€75
E. A. Wallis Budge
1932 · Fine
€95
Frederic William Farrar
1905 · Fine
€35
Mark Twain
1919 · Fine
€65
Abraham Kuyper
1880 · Fine · NL
€110
Thomas Henry Huxley
1897 · Fine
€135
Frederik Hendrik Neiszen
1935 · Fine · NL
€110
Sir Muhammad Iqbal
1913 · Fine
€175
Bartholomeus Johannes Westerbeek van Eerten
1923 · Fine · NL
€100
Rudolf Steiner
1932 · Fine
€40
Erwin Madelung
1935 · Fine
€40
Carl David Tolmé Runge
1916 · Fine
€50
Errico Malatesta
1918 · Fine
€110
Henri Poincaré
1910 · Fine
€30
Sachs, Julius
1902 · Fine
€80
John Bernhard Stallo
1883 · Fine
€55
Jan Hendrik Holwerda
1929 · Fine · NL
€60
André Gide
1924 · Fine
€115
Abraham Kuyper
1914 · Fine · NL
€140
Arthur van Schendel
1921 · Fine · NL
€35
David Hume
1903 · Fine
€50
Herbert Spencer
1862 · Fine
€105
Camille Flammarion
1887 · Fine
€80
McDougall, William
1917 · Fine
€100
Antoni Christiaan Winand Staring
1900 · Fine · NL
€30
Søren Kierkegaard, Bruce H. Kirmmse
1877 · Fine
€215
John Ruskin
1924 · Fine
€105
Alfred North Whitehead
1930 · Fine
€40
James Martineau
1923 · Fine
€40
A. F. Krull
1927 · Fine · NL
€80
Petrus Johannes Blok
1902 · Fine · NL
€90
Paul Drude
1919 · Fine
€160
Robert Graves
1921 · Fine
€45
Louis Couperus
1895 · Fine · NL
€65
Jean-Jacques Rousseau
1927 · Fine
€30
Wernher der Gartenaere
1917 · Fine
€65