Morris Raphael Cohen
1935 · Fine
€35
George Boole
1882 · Fine
€65
Josiah Royce
1903 · Very good
€65
René Descartes
1912 · Very good
€85
Plato
1843 · Fair
€60
Aristotle
1901 · Good
€70
Herbert Spencer
1882 · Very good
€105
René Descartes
1655 · Fine
€1,820
Herbert Spencer
1867 · Good
€45
Marcet Mrs
1828 · Good
€155
Adriaan Pit
1930 · Good · NL
€25
Upton Sinclair
1927 · Very good
€75
A. S. Neill
1935 · Very good
€45
William Kingdon Clifford
1914 · Fair
€35
Plato
1864 · Good
€100
Auguste Comte
1867 · Fair
€50
Rabindranath Tagore
1935 · Good
€30
Constantin-François Volney
1796 · Fine
€355
Plato
1889 · Good
€60
Yogananda Paramahansa
1931 · Fine
€125
Max Scheler
1935 · Good
€20
Alexander Campbell Fraser
1901 · Good
€75
Adam Smith
1798 · Very good
€500
Rudolf Otto
1929 · Fine
€35
Friedrich Fröbel
1913 · Good
€20
Aristotle
1811 · Good
€125
Robert Flint
1932 · Very good
€40
Immanuel Kant, Alain Renaut
1807 · Very good
€330
Schwegler, Albert
1864 · Fine
€120
William James
1931 · Good
€40
George Santayana
1935 · Very good
€75
John Cowper Powys
1933 · Very good
€50
Stephan Körner
1799 · Very good
€280
Weber, Alfred
1909 · Good
€60
Francis Bacon
1765 · Very good
€480
Felix O'Gallagher
1786 · Good
€265
Denison Olmsted
1868 · Good
€60
Rudolf Steiner, Hard Head Publications
1896 · Very good
€95
Colin MacLaurin
1753 · Very good
€835
Three Initiates
1928 · Good
€20
Gottfried Wilhelm Leibniz
1721 · Good
€460
Patañjali.
1893 · Good
€55
Friedrich Schiller
1935 · Fair
€20
Bernard Boedder
1897 · Fair
€40
Edmund Law
1746 · Very good
€565
William Thomson Kelvin, Peter Guthrie Tait
1868 · Good
€65
Friedrich Christian Accum
1816 · Good
€110
William De Witt Hyde
1935 · Very good
€25
Thomas Troward
1922 · Good
€30
Henri Bergson, Frank Lubecki Pogson
1896 · Good
€60
David Hume
1762 · Fine
€415
George Berkeley
1812 · Fair
€185
Joseph Priestley
1841 · Very good
€95
Immanuel Kant
1802 · Fair
€55
Clive Bell
1924 · Very good
€115
Roger Eliot Fry
1931 · Very good
€30
William Wollaston, William Wollaston
1754 · Fine
€325
Immanuel Kant, Kant
1816 · Very good
€155
Erwin Rohde
1913 · Very good
€75
Georg Wilhelm Friedrich Hegel
1935 · Good
€100