George Boole
1856 · Good
€90
Edmund Husserl
1913 · Good
€45
Sextus Empiricus.
1887 · Good
€40
Sir William Hamilton, 9th Baronet
1859 · Good
€75
A. S. Neill
1933 · Good
€90
Ernst Cassirer
1930 · Good
€30
Alfred North Whitehead, Bertrand Russell
1911 · Very good
€25
Cassius Jackson Keyser
1935 · Good
€50
H. G. Wells
1911 · Very good
€40
Henri Poincaré, Nicolae Sfetcu
1919 · Very good
€100
Aristotle
1882 · Good
€95
Pierre Louÿs
1917 · Fair
€20
Joseph Louis Lagrange, Thomas J. McCormack
1898 · Good
€40
Michael Faraday
1874 · Fine
€65
Julien Wolbers
1871 · Good · NL
€115
James Martineau
1935 · Very good
€80
Plato
1916 · Good
€20
Arthur Schopenhauer
1912 · Good
€30
Stefan Zweig
1935 · Good
€35
G. F. Rodwell
1873 · Good
€70
Henri Poincaré
1906 · Very good
€45
Frank Thomas Bullen
1935 · Good
€40
P. Wijdenes
1932 · Very good · NL
€60
Samuel Pierpont Langley
1889 · Good
€45
Nathaniel Lloyd
1935 · Fine
€65
Gaius
1904 · Fair
€40
Mary Greer Conklin
1923 · Fine
€40
Augustin Privat-Deschanel
1903 · Very good
€40
Emmanuel Levinas
1935 · Good
€35
James McNeill Whistler
1895 · Good
€120
Parmenides.
1902 · Fair
€35
Andrew Lang
1935 · Fine
€110
William Allen Whitworth
1870 · Very good
€55
Annie Salomons
1923 · Very good · NL
€25
Henry Adams
1926 · Good
€90
Erwin Rohde
1902 · Fair
€15
Clemens Brentano
1894 · Very good
€45
Gustave Flaubert
1921 · Good
€30
Florian Cajori
1929 · Good
€65
Samuel Colman, Samuel Colman
1935 · Good
€30
Hermann Weyl
1921 · Very good
€80
Edouard Goursat
1933 · Very good
€30
Edward Carpenter
1906 · Good
€25
Eliza Laurillard
1891 · Fair · NL
€45
Johan Hendrik Gallée
1882 · Very good · NL
€110
Walter Rauschenbusch
1929 · Very good
€35
Alfred North Whitehead
1931 · Fine
€60
Frédéric Bastiat
1873 · Fair
€30
John Galsworthy
1935 · Fine
€105
Marcellus Emants
1900 · Very good · NL
€25
F. Max Müller
1910 · Very good
€35
Willem Bilderdijk
1864 · Good · NL
€85
Lucy Maud Montgomery
1935 · Good
€45
H. Koffyberg
1924 · Fair · NL
€20
Bertrand Russell
1920 · Fair
€40
Wilmore, Albert.
1921 · Good
€35
E. A. Wallis Budge
1901 · Good
€40
A. Rutgers
1872 · Fair · NL
€50
Garrett Putman Serviss
1907 · Fair
€30
Adolf von Harnack
1889 · Fair
€40