Seneca the Younger
1531 · Fair
€1,440
Alfred Daniell
1888 · Good
€70
R. G. Collingwood
1838 · Good
€245
George Henry Lewes
1883 · Very good
€65
William Thomson Kelvin, Peter Guthrie Tait
1868 · Good
€65
Andreas Röschlaub
1809 · Fine · NL
€195
Georg Wilhelm Friedrich Hegel
1910 · Very good
€35
Abraham Kuyper
1897 · Fair · NL
€30
David Hume
1763 · Good
€395
Bādarāyaṇa.
1908 · Good
€70
Auguste Comte
1930 · Good
€30
Max Rooses
1895 · Fair · NL
€55
Felix O'Gallagher
1786 · Good
€265
Michiel Cornelis van Mourik Broekman
1925 · Very good · NL
€95
Ralph Waldo Emerson
1851 · Very good
€130
Foeke Buitenrust Hettema
1914 · Very good · NL
€55
Thorstein Veblen, Teichgraeber, Richard F., III
1932 · Good
€20
Erwin Rohde
1913 · Very good
€75
Antonius Gerardus van Onsenoort
1832 · Very good · NL
€120
Carl Gobée
1861 · Very good · NL
€45
Georg Simmel
1902 · Very good
€40
Thomas Troward
1922 · Good
€30
Augustus J. C. Hare, Julius Charles Hare
1838 · Very good
€155
Jacob Haafner
1851 · Very good · NL
€85
Walter E. Thirring
1906 · Fine
€40
Johann Wolfgang von Goethe
1816 · Good
€100
Jean-Antoine-Nicolas de Caritat marquis de Condorcet
1816 · Good
€270
J. F. Martinet
1796 · Very good
€750
Søren Kierkegaard
1846 · Very good
€340
Robert Flint
1932 · Very good
€40
David Hume
1883 · Good
€55
Aristotle
1590 · Fine
€3,425
George Berkeley
1812 · Fair
€185
Gottfried Wilhelm Leibniz
1721 · Good
€460
G. Wisse
1908 · Very good · NL
€30
R. Fletcher
1922 · Good
€20
George Fownes
1848 · Very good
€200
Gerrit van de Linde
1909 · Fair · NL
€20
J. H. Van Zanten
1928 · Good · NL
€35
Carl Gustav Jung
1915 · Very good
€25
Willem Bilderdijk
1821 · Fair · NL
€135
Friedrich Christian Accum
1816 · Good
€110
Patañjali.
1893 · Good
€55
P. Biesterveld
1932 · Good · NL
€75
Adriaan Schoonebeek
1702 · Fine · NL
€895
Hippocrates
1534 · Fair
€320
A. van Veldhuizen
1935 · Good · NL
€30
Antonius van der Linde
1869 · Very good · NL
€205
Georg Wilhelm Friedrich Hegel
1847 · Good
€205
Thomas Reid, Knud Haakonssen
1788 · Very good
€235
Bronger van Halteren
1911 · Good · NL
€65
F. Pijper
1923 · Very good · NL
€75
Peter Willem Hendrik Truyen
1901 · Fair · NL
€15
George Boole
1882 · Fine
€65
John Dewey
1901 · Good
€45
Ernst Christian Achelis
1902 · Good · NL
€20
Bernard Boedder
1897 · Fair
€40
Immanuel Kant
1805 · Very good
€100
F. W. van Wijk
1935 · Good · NL
€30
Aristotle
1901 · Good
€70