Morris Raphael Cohen
1935 · Fine
€35
Lewis Carroll
1914 · Very good
€25
Ludwig Wittgenstein, Isidoro Reguera Pérez
1935 · Good
€45
Edmund Husserl
1913 · Good
€45
Sextus Empiricus.
1887 · Good
€40
Adriaan Pit
1930 · Good · NL
€25
Ernst Cassirer
1930 · Good
€30
Alfred North Whitehead, Bertrand Russell
1911 · Very good
€25
Lydia Maria Child
1872 · Fair
€25
Cassius Jackson Keyser
1935 · Good
€50
Elias Loomis
1874 · Very good
€50
H. G. Wells
1911 · Very good
€40
Josiah Royce
1914 · Fair
€25
A. S. Neill
1935 · Very good
€45
Josiah Royce
1935 · Very good
€30
Auguste Comte
1867 · Fair
€50
Ferdinand Wolff
1859 · Good · NL
€40
Pierre Louÿs
1917 · Fair
€20
Rudolf Otto
1929 · Fine
€35
Joseph Louis Lagrange, Thomas J. McCormack
1898 · Good
€40
Lodewijk van Deyssel
1907 · Good · NL
€20
Annie Salomons
1916 · Good · NL
€30
Rudolf Steiner
1898 · Fair
€25
Louis Couperus
1906 · Very good · NL
€50
Florian Cajori
1907 · Very good
€45
Jules Bernard Luys
1909 · Good
€25
Edward Sapir
1926 · Good
€40
Jacques Loeb
1918 · Good
€35
Plato
1916 · Good
€20
R. G. Collingwood
1929 · Good
€35
Mircea Eliade
1923 · Fair
€50
Arthur Schopenhauer
1912 · Good
€30
F. Max Müller
1884 · Good
€40
Guillaume Groen van Prinsterer
1903 · Fine · NL
€30
Lucien Poincaré
1929 · Good
€25
Stefan Zweig
1935 · Good
€35
M. E. Chevreul
1896 · Very good
€45
R. G. Collingwood
1865 · Good
€45
Henri Bergson, Nancy Margaret Paul
1902 · Good
€45
Henri Poincaré
1906 · Very good
€45
T. E. Hulme
1935 · Very good
€25
Frank Thomas Bullen
1935 · Good
€40
Jacques Maritain
1921 · Very good
€45
Francis Bacon
1930 · Fair
€45
Roscoe Pound
1935 · Fair
€45
Samuel Pierpont Langley
1889 · Good
€45
Tito Vignoli
1885 · Good
€50
James Martineau
1923 · Fine
€40
Benedictus de Spinoza
1909 · Good
€30
Gaius
1904 · Fair
€40
Mary Greer Conklin
1923 · Fine
€40
William Dean Howells
1900 · Good
€35
Augustin Privat-Deschanel
1903 · Very good
€40
Louis Couperus
1904 · Good · NL
€30
Friedrich Fröbel
1913 · Good
€20
Leo Polak
1930 · Very good · NL
€45
Louis Couperus
1904 · Very good · NL
€25
Oscar Wilde
1904 · Very good
€30
Emmanuel Levinas
1935 · Good
€35
F. Matthias Alexander
1935 · Fine
€35