Edmund Husserl
1913 · Good
€45
George Boole
1856 · Good
€90
Sextus Empiricus.
1887 · Good
€40
Alfred North Whitehead, Bertrand Russell
1911 · Very good
€25
Sir William Hamilton, 9th Baronet
1859 · Good
€75
Ernst Cassirer
1930 · Good
€30
A. S. Neill
1933 · Good
€90
Cassius Jackson Keyser
1935 · Good
€50
Michael Faraday
1874 · Fine
€65
Aristotle
1882 · Good
€95
Brooks Adams
1897 · Fine
€190
Clemens Brentano
1894 · Very good
€45
Plato
1916 · Good
€20
James McNeill Whistler
1895 · Good
€120
G. F. Rodwell
1873 · Good
€70
Frank Thomas Bullen
1935 · Good
€40
Johan Hendrik Gallée
1882 · Very good · NL
€110
R. Verdeyen
1931 · Good · NL
€20
Eugen Horn
1900 · Good · NL
€50
Joseph Louis Lagrange, Thomas J. McCormack
1898 · Good
€40
Edward William Lucas
1899 · Very good
€55
Annie Salomons
1923 · Very good · NL
€25
S. Coolsma
1902 · Good · NL
€80
H. G. Wells
1911 · Very good
€40
Henri Poincaré, Nicolae Sfetcu
1919 · Very good
€100
Luke Hebert
1889 · Good
€65
Nathaniel Lloyd
1935 · Fine
€65
Marcellus Emants
1900 · Very good · NL
€25
Walter Rauschenbusch
1929 · Very good
€35
Samuel Pierpont Langley
1889 · Good
€45
Stefan Zweig
1935 · Good
€35
Arie Mijnlieff
1881 · Good · NL
€120
Julien Wolbers
1871 · Good · NL
€115
Mary Greer Conklin
1923 · Fine
€40
P. Wijdenes
1932 · Very good · NL
€60
Philip B. Hawk, Hawk, Philip Bovier
1920 · Very good
€40
G. A. Wilken
1902 · Very good · NL
€100
Samuel Colman, Samuel Colman
1935 · Good
€30
Alexander Lowy, Benjamin Harrow
1924 · Fine
€120
Edward Carpenter
1906 · Good
€25
Jacinto Benavente
1920 · Good
€20
Arthur Schopenhauer
1912 · Good
€30
John Ruskin
1873 · Very good
€105
Mabel Osgood Wright
1903 · Good
€40
Augustin Privat-Deschanel
1903 · Very good
€40
Florian Cajori
1929 · Good
€65
Jacob Gijsbert Boerlage
1925 · Good · NL
€55
Ernst Heinrich Philipp August Haeckel
1911 · Very good
€110
Estanislao del Campo
1921 · Good
€60
José Ortega y Gasset
1931 · Very good
€60
Willem Bilderdijk
1864 · Good · NL
€85
Pieter Scheltema
1870 · Good · NL
€55
Edouard Goursat
1933 · Very good
€30
Jacob Van Beek
1921 · Good · NL
€25
Henry Adams
1926 · Good
€90
Johanna de Jongh
1913 · Fine · NL
€125
Marion Harland
1875 · Good
€80
Louis Dyer, Plato
1922 · Fine
€90
Adam Storey Farrar
1879 · Good
€45
Alfred North Whitehead
1931 · Fine
€60