Books in Category: Philosophy & Ethics (sorted alphabetically by author)
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Kant's Prolegomena to Any Future Metaphysics
Immanuel Kant
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Die Religion innerhalb der Grenzen der bloßen Vernunft (German)
Immanuel Kant
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The Critique of Pure Reason
Immanuel Kant
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Optimism: An Essay
Helen Keller
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Mietteitä kasvatuksesta (Finnish)
Lorenz Kellner
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Aus der Geschichte der menschlichen Dummheit (German)
Max Kemmerich
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Feminism and Sex-Extinction
Arabella Kenealy
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Az élet könyve (Hungarian)
Géza Kenedi
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The Planet Mars and Its Inhabitants, a Psychic Revelation
J. L. Kennon
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The Origin and Permanent Value of the Old Testament
Charles Foster Kent
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Some War-time Lessons
Frederick P. Keppel
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A dead man's diary : written after his decease
Coulson Kernahan
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The Morality of Woman, and Other Essays
Ellen Key
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De moedige vrouw (Dutch)
Ellen Key
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Love and Marriage
Ellen Key
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The Education of the Child
Ellen Key
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The Woman Movement
Ellen Key
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The Century of the Child
Ellen Key
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Moralens utveckling (Swedish)
Ellen Key and Ch. Letourneau
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Studies and Exercises in Formal Logic
John Neville Keynes
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The profanity of paint
William Kiddier
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Viettelijän päiväkirja (Finnish)
Søren Kierkegaard
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Selections from the Writings of Kierkegaard
Søren Kierkegaard
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The Ignatian Epistles Entirely Spurious: A Reply to the Right Rev. Dr. Lightfoot
W. D. Killen
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Ihmisestä ja elämästä: Kirjoitelmia (Finnish)
Volter Kilpi