Friedrich Fröbel
1913 · Good
€20
Max Scheler
1935 · Good
€20
Josiah Royce
1903 · Very good
€65
Alexander Campbell Fraser
1901 · Good
€75
Adriaan Pit
1930 · Good · NL
€25
Georg Wilhelm Friedrich Hegel
1910 · Very good
€35
Rudolf Otto
1929 · Fine
€35
Georg Simmel
1902 · Very good
€40
Inge, William Ralph
1926 · Fine
€50
John Cowper Powys
1933 · Very good
€50
Weber, Alfred
1909 · Good
€60
Georg Wilhelm Friedrich Hegel
1935 · Good
€100
Rabindranath Tagore
1935 · Good
€30
William De Witt Hyde
1935 · Very good
€25
Plato
1917 · Good
€30
René Descartes
1912 · Very good
€85
A. S. Neill
1935 · Very good
€45
William Kingdon Clifford
1914 · Fair
€35
Three Initiates
1928 · Good
€20
Carl Gustav Jung
1915 · Very good
€25
Clive Bell
1924 · Very good
€115
Friedrich Nietzsche
1900 · Very good
€65
Thomas Troward
1922 · Good
€30
Carl Gustav Jung
1925 · Very good
€30
Hegeler Institute
1924 · Fine
€100
R. Krul
1935 · Very good · NL
€55
George Santayana
1935 · Very good
€75
Upton Sinclair
1927 · Very good
€75
Auguste Comte
1930 · Good
€30
Yogananda Paramahansa
1931 · Fine
€125
Silvanus Phillips Thompson
1935 · Very good
€35
Friedrich Schiller
1935 · Fair
€20
Friedrich Hölderlin
1935 · Fair
€20
Laurids Bruun
1908 · Very good · NL
€105
William James
1931 · Good
€40
Anselm of Canterbury, Anselm
1928 · Fair
€35
Bādarāyaṇa.
1908 · Good
€70
Michiel Cornelis van Mourik Broekman
1925 · Very good · NL
€95
Thorstein Veblen, Teichgraeber, Richard F., III
1932 · Good
€20
F. Pijper
1915 · Very good · NL
€40
Aristotle
1901 · Good
€70
Robert Flint
1932 · Very good
€40
R. Fletcher
1922 · Good
€20
Jacob van Lennep, Johannes Bosscha
1926 · Very good · NL
€90
José Ortega y Gasset
1915 · Very good
€45
Gerrit Cornelis August Valewink
1918 · Fine · NL
€85
George Santayana
1908 · Very good
€55
Ernst Christian Achelis
1902 · Good · NL
€20
Peter Willem Hendrik Truyen
1901 · Fair · NL
€15
Erwin Rohde
1913 · Very good
€75
Morris Raphael Cohen
1935 · Fine
€35
Johann Joseph Most
1928 · Good
€20
Maria Montessori
1931 · Good
€110
Heinrich Spoerl
1935 · Fair · NL
€25
Johannes Hoops
1911 · Good
€65
Jan van Leeuwen
1924 · Very good · NL
€30
Bronger van Halteren
1911 · Good · NL
€65
J. van Lennep
1911 · Very good · NL
€45
Richard de Bury
1903 · Good
€50
Abraham Kuyper
1914 · Good · NL
€20