Plato
1916 · Good
€20
Brooks Adams
1897 · Fine
€190
John Dewey
1935 · Good
€30
Philip B. Hawk, Hawk, Philip Bovier
1920 · Very good
€40
George Grote
1871 · Fair
€45
George Santayana
1918 · Very good
€70
Clemens Brentano
1894 · Very good
€45
Henri Bergson
1919 · Very good
€35
Erwin Rohde
1902 · Fair
€15
Sextus Empiricus.
1887 · Good
€40
George Santayana
1920 · Very good
€40
Heraclitus of Ephesus
1918 · Good
€20
Parmenides.
1902 · Fair
€35
Friedrich Nietzsche, Marie-Luise Haase
1897 · Good
€75
Grant Allen
1910 · Good
€40
Thomas Aquinas Sister, originally Agnes O'Neil
1934 · Good
€75
H. G. Wells
1911 · Very good
€40
James Martineau
1935 · Very good
€80
Alfred North Whitehead, Bertrand Russell
1911 · Very good
€25
Eugen Horn
1900 · Good · NL
€50
George Adolphus Jacob
1908 · Very good
€35
Augustin Privat-Deschanel
1903 · Very good
€40
Henri Poincaré, Nicolae Sfetcu
1919 · Very good
€100
Henry Adams
1926 · Good
€90
Nikos Kazantzakis
1901 · Good
€25
Stefan Zweig
1935 · Good
€35