Albert Einstein, G. B. Jeffery
1926 · Fair
€25
Plato
1917 · Good
€30
Hegeler Institute
1924 · Fine
€100
Yogananda Paramahansa
1931 · Fine
€125
John Cowper Powys
1933 · Very good
€50
José Ortega y Gasset
1915 · Very good
€45
Weber, Alfred
1909 · Good
€60
Friedrich Fröbel
1913 · Good
€20
William Kingdon Clifford
1914 · Fair
€35
Clive Bell
1924 · Very good
€115
George Santayana
1935 · Very good
€75
Three Initiates
1928 · Good
€20
René Descartes
1912 · Very good
€85
Samuel Gronemann
1935 · Good · NL
€110
Bādarāyaṇa.
1908 · Good
€70
Friedrich Schiller
1935 · Fair
€20
J. van Lennep
1918 · Good · NL
€35
Rudolf Otto
1929 · Fine
€35
Morris Raphael Cohen
1935 · Fine
€35
Max Scheler
1935 · Good
€20
Upton Sinclair
1927 · Very good
€75
Laurids Bruun
1908 · Very good · NL
€105
Louis Couperus
1906 · Very good · NL
€50
Adriaan Pit
1930 · Good · NL
€25
Louis Couperus
1904 · Very good · NL
€25
Rabindranath Tagore
1935 · Good
€30
Adolf Engler
1917 · Good
€25
Josiah Royce
1903 · Very good
€65
Robert Flint
1932 · Very good
€40
Gerrit van de Linde
1909 · Fair · NL
€20
Alexander Campbell Fraser
1901 · Good
€75
Maria Montessori
1931 · Good
€110
William De Witt Hyde
1935 · Very good
€25
Albert Camus
1917 · Fine
€90
Peter Willem Hendrik Truyen
1901 · Fair · NL
€15
Erwin Rohde
1913 · Very good
€75
Anatole France
1901 · Very good
€120
Bertrand Russell
1935 · Good
€85
A. S. Neill
1935 · Very good
€45
Georg Wilhelm Friedrich Hegel
1935 · Good
€100
Miguel de Unamuno
1935 · Good
€25
Auguste Comte
1930 · Good
€30
Pieter Lodewijk Muller
1917 · Fair · NL
€55
Foeke Buitenrust Hettema
1914 · Very good · NL
€55
Abraham Kuyper
1935 · Very good · NL
€50
Johann Joseph Most
1928 · Good
€20
Georg Simmel
1902 · Very good
€40
Walter E. Thirring
1906 · Fine
€40
Nederlandse Mycologische Vereniging
1918 · Fair · NL
€15
Eugène Pittard
1926 · Good
€20
Gerhart Hauptmann
1911 · Very good
€25
Roger Eliot Fry
1931 · Very good
€30
Herman Gorter
1935 · Very good · NL
€40
Frederick Soddy
1935 · Fine
€30
Inge, William Ralph
1926 · Fine
€50
Jan van Leeuwen
1924 · Very good · NL
€30
William James
1931 · Good
€40
Aristotle
1901 · Good
€70
Hilaire Belloc
1929 · Fine
€35
Gerard Visser
1917 · Good · NL
€25