Augustus J. C. Hare, Julius Charles Hare
1838 · Very good
€155
Rudolf Steiner, Hard Head Publications
1896 · Very good
€95
Arthur Schopenhauer
1902 · Fair
€20
Voltaire
1765 · Fine
€645
James Martineau
1935 · Very good
€80
Judah ha-Levi, Ha-Levi Judah
1565 · Fair
€905
Plato
1917 · Good
€30
Johann Gottlieb Fichte
1910 · Very good
€60
Rabindranath Tagore
1917 · Very good
€35
Benedetto Croce
1912 · Very good
€25
Étienne Gilson
1935 · Good
€20
Johannes Hermanus Gunning
1876 · Very good · NL
€110
Bertrand Russell
1916 · Fair
€45
Ralph Waldo Emerson
1808 · Very good
€205
Charles F. Haanel, Ruth L. Miller
1919 · Good
€20
Benedictus de Spinoza, Wolfgang Bartuschat
1896 · Good
€40
Friedrich Hölderlin
1935 · Fair
€20
Brooks Adams
1897 · Fine
€190
Johann Heinrich Pestalozzi
1833 · Good
€155
Thomas Reid, Knud Haakonssen
1788 · Very good
€235
Miguel de Unamuno
1935 · Good
€25
Maurice Joly, Veronica S. Jesus
1872 · Good
€65
Constantin-François Volney
1796 · Fine
€355
Jacques Maritain
1935 · Good
€115
Śāntideva
1935 · Fair
€40
Cicero
1576 · Very good
€1,025
Xenophon
1554 · Good
€645
John Cowper Powys
1933 · Very good
€50
George Berkeley
1739 · Good
€345
Socrates Scholasticus
1739 · Good
€815
Vladimir Il’ich Lenin, John Barber
1935 · Very good
€55
Heraclitus of Ephesus
1918 · Good
€20
Wilhelm Worringer
1909 · Very good
€60
Walter Crane
1911 · Very good · NL
€25
Karl Marx
1934 · Good
€65
Jonathan Edwards
1772 · Good
€305
Epictetus
1780 · Good
€195
David Duncan
1904 · Good
€70
Theodore Dreiser
1935 · Very good
€25
Clemens Brentano
1894 · Very good
€45
Richard Maurice Bucke
1935 · Very good
€85
Friedrich Fröbel
1913 · Good
€20
Robert Flint
1932 · Very good
€40
Berdoe, Edward
1903 · Very good
€30
Ethel Puffer Howes
1905 · Good
€35
Johann Georg Zimmermann
1799 · Good
€560
Peter Kropotkin
1910 · Fine
€50
Inge, William Ralph
1926 · Fine
€50
Mikhail Aleksandrovich Bakunin
1892 · Good
€35
Joseph Butler
1752 · Very good
€275
Oliver Goldsmith
1794 · Good
€265
Epictetus
1800 · Very good
€180
John Chipman Gray
1933 · Good
€35
Arthur, comte de Gobineau
1911 · Fair
€30
Oliver Wendell Holmes, Sr.
1910 · Good
€60
Saint Clement of Alexandria
1901 · Very good
€25
Francis Hutcheson, Wolfgang Leidhold
1725 · Good
€345
Martin Buber
1922 · Good
€45
John Stuart Mill
1883 · Good
€55
Elizabeth Sanderson Haldane
1930 · Good
€95