Clemens Brentano
1894 · Very good
€45
Thomas Aquinas Sister, originally Agnes O'Neil
1934 · Good
€75
Henri Poincaré, Nicolae Sfetcu
1919 · Very good
€100
René Descartes
1860 · Fair
€55
Sextus Empiricus.
1887 · Good
€40
Eugen Horn
1900 · Good · NL
€50
Abraham Kuyper
1892 · Very good · NL
€50
Aristotle
1884 · Very good
€75
H. G. Wells
1911 · Very good
€40
Annie Salomons
1923 · Very good · NL
€25
Edwin A. Burtt
1926 · Very good
€25
Grant Allen
1910 · Good
€40
Mary Whiton Calkins
1910 · Very good
€35
Augustine of Hippo
1857 · Very good
€75
Jacob Van Beek
1921 · Good · NL
€25
Parmenides.
1902 · Fair
€35
George Adolphus Jacob
1908 · Very good
€35
Adam Storey Farrar
1879 · Good
€45
George Grote
1871 · Fair
€45
Arthur van Schendel
1935 · Good · NL
€45
Plato
1916 · Good
€20
Plato
1873 · Fair
€105
Marcellus Emants
1900 · Very good · NL
€25
Henri Bergson
1919 · Very good
€35
James Martineau
1935 · Very good
€80
Augustin Privat-Deschanel
1903 · Very good
€40
Emmanuel Levinas
1935 · Good
€35
Jan Pieter de Bie
1931 · Good · NL
€65
Heraclitus of Ephesus
1918 · Good
€20
José Ortega y Gasset
1931 · Very good
€60
Stefan Zweig
1935 · Good
€35
Henry Adams
1926 · Good
€90
Henri van Heurck
1869 · Very good · NL
€75
Johan Hendrik Gallée
1882 · Very good · NL
€110
Friedrich Nietzsche, Marie-Luise Haase
1897 · Good
€75
Adolf von Harnack
1889 · Fair
€40
Clive Bell
1935 · Very good
€120
A. Sizoo
1900 · Very good · NL
€30
Brooks Adams
1897 · Fine
€190
Rudolf Steiner, Max Gysi
1910 · Very good
€25
Samuel Muller
1915 · Very good · NL
€80
Walter Crum Watson
1917 · Fair
€25
Theo van Doesburg
1922 · Fair · NL
€25
Willem Bilderdijk
1864 · Good · NL
€85
Alexander Ziegler
1874 · Very good · NL
€165
Serpa Pinto, Alfred Elwes
1927 · Good
€25
Denis Diderot
1862 · Fine
€270
Jacob Abbott
1864 · Fair
€40
Ernest Albee
1906 · Good
€20
Laurens Adriaanse
1911 · Good · NL
€25
Peter Kropotkin
1910 · Fine
€50
Maximilien Marie
1925 · Fine
€35
Tine de Kruyff-Gobius
1912 · Good · NL
€55
Eliza Laurillard
1891 · Fair · NL
€45
Miguel de Unamuno
1926 · Fair
€40
Muir, Robert Sir, R MacSween
1935 · Very good
€80
R. J. W. Rudolph
1917 · Fair · NL
€25
Alexis de Tocqueville
1890 · Very good
€90
G. Charles Aalders
1923 · Good · NL
€75
P. Wijdenes
1932 · Very good · NL
€60