William De Witt Hyde
1935 · Very good
€25
Plato
1917 · Good
€30
Three Initiates
1928 · Good
€20
Friedrich Hölderlin
1935 · Fair
€20
Georg Wilhelm Friedrich Hegel
1910 · Very good
€35
William James
1931 · Good
€40
Rabindranath Tagore
1935 · Good
€30
Friedrich Fröbel
1913 · Good
€20
Max Scheler
1935 · Good
€20
Herbert Spencer
1867 · Good
€45
Rudolf Otto
1929 · Fine
€35
John Cowper Powys
1933 · Very good
€50
Adriaan Pit
1930 · Good · NL
€25
Friedrich Schiller
1935 · Fair
€20
Inge, William Ralph
1926 · Fine
€50
William Kingdon Clifford
1914 · Fair
€35
Morris Raphael Cohen
1935 · Fine
€35
Auguste Comte
1930 · Good
€30
Auguste Comte
1867 · Fair
€50
Albert Einstein, G. B. Jeffery
1926 · Fair
€25
Robert Flint
1932 · Very good
€40
Søren Kierkegaard
1863 · Fair
€45
A. S. Neill
1935 · Very good
€45
Georg Simmel
1902 · Very good
€40
Sigmund Freud
1906 · Good
€25
José Ortega y Gasset
1915 · Very good
€45
Thomas Troward
1922 · Good
€30
Roger Eliot Fry
1931 · Very good
€30
Richard Strauss
1935 · Good
€40
P. L. Verhulst
1935 · Fair · NL
€15
Ernst Christian Achelis
1902 · Good · NL
€20
Thorstein Veblen, Teichgraeber, Richard F., III
1932 · Good
€20
Gerrard Hickson
1922 · Very good
€35
J. Reynolds Green
1916 · Fair
€20
Bernard Boedder
1897 · Fair
€40
Carl Gustav Jung
1915 · Very good
€25
Miguel de Unamuno
1935 · Good
€25
Peter Willem Hendrik Truyen
1901 · Fair · NL
€15
John of the Cross
1914 · Fair
€20
J. van Lennep
1918 · Good · NL
€35
Śāntideva
1935 · Fair
€40
Eugène Pittard
1926 · Good
€20
F. Pijper
1915 · Very good · NL
€40
Silvanus Phillips Thompson
1935 · Very good
€35
Enrico Agostino Morselli
1898 · Very good · NL
€50
Gerrit Kalff
1928 · Good · NL
€45
Gerard Visser
1917 · Good · NL
€25
José Ortega y Gasset
1935 · Good
€45
Carl Gobée
1861 · Very good · NL
€45
Gerrit van de Linde
1909 · Fair · NL
€20
Anthony Rich
1899 · Fair
€30
Walter E. Thirring
1906 · Fine
€40
H. Stanley Redgrove
1935 · Fair
€15
William Shakespeare
1884 · Very good
€45
William Shakespeare
1902 · Very good
€40
G. Wisse
1908 · Very good · NL
€30
Abraham Kuyper
1935 · Very good · NL
€50
Dirk Peter Blok
1900 · Good · NL
€35
John Dewey
1901 · Good
€45
Adolf Engler
1917 · Good
€25