Friedrich Fröbel
1913 · Good
€20
Max Scheler
1935 · Good
€20
Rabindranath Tagore
1935 · Good
€30
Rudolf Otto
1929 · Fine
€35
Friedrich Schiller
1935 · Fair
€20
John Cowper Powys
1933 · Very good
€50
William De Witt Hyde
1935 · Very good
€25
A. S. Neill
1935 · Very good
€45
Plato
1917 · Good
€30
Herbert Spencer
1867 · Good
€45
William Kingdon Clifford
1914 · Fair
€35
Auguste Comte
1867 · Fair
€50
Morris Raphael Cohen
1935 · Fine
€35
Adriaan Pit
1930 · Good · NL
€25
Miguel de Unamuno
1935 · Good
€25
Three Initiates
1928 · Good
€20
William James
1931 · Good
€40
José Ortega y Gasset
1915 · Very good
€45
José Ortega y Gasset
1935 · Good
€45
Thomas Troward
1922 · Good
€30
Søren Kierkegaard
1863 · Fair
€45
John Dewey
1901 · Good
€45
Inge, William Ralph
1926 · Fine
€50
Thorstein Veblen, Teichgraeber, Richard F., III
1932 · Good
€20
Georg Wilhelm Friedrich Hegel
1910 · Very good
€35
Albert Einstein, G. B. Jeffery
1926 · Fair
€25
Auguste Comte
1930 · Good
€30
Joseph Le Conte
1928 · Very good
€30
John of the Cross
1914 · Fair
€20
Roger Eliot Fry
1931 · Very good
€30
Rudolf Otto, Otto, Rudolf (Carl Ludwig Rudolf), 1869-1937.
1929 · Fair
€15
Friedrich Hölderlin
1935 · Fair
€20
Robert Flint
1932 · Very good
€40
Bernard Boedder
1897 · Fair
€40
F. Pijper
1915 · Very good · NL
€40
Osler, William Sir
1926 · Very good
€45
Silvanus Phillips Thompson
1935 · Very good
€35
Śāntideva
1935 · Fair
€40
Walter E. Thirring
1906 · Fine
€40
J. Reynolds Green
1916 · Fair
€20
Freda Dinn
1903 · Very good
€35
Carl Gustav Jung
1915 · Very good
€25
Anselm of Canterbury, Anselm
1928 · Fair
€35
Adolf Engler
1917 · Good
€25
Georg Simmel
1902 · Very good
€40
Burnett Hillman Streeter, R. Brook
1919 · Fair
€15
Carlton C. Curtis
1907 · Fine
€50
Gerrit van de Linde
1909 · Fair · NL
€20
Armando Palacio Valdés, Guy Everett Snavely
1919 · Good
€20
Eugène Pittard
1926 · Good
€20
R. Fletcher
1922 · Good
€20
Sigmund Freud
1906 · Good
€25
Carl Gobée
1861 · Very good · NL
€45
Kahlil Gibran, jaime arbe
1924 · Fair
€30
William Shakespeare
1906 · Good
€45
Julie Hoek
1930 · Very good · NL
€35
G. Wisse
1908 · Very good · NL
€30
Ernest Shurtleff Holmes
1935 · Fair
€15
Ernst Christian Achelis
1902 · Good · NL
€20
J. van Lennep
1918 · Good · NL
€35