| Capital: A Critical Analysis of Capitalist Production Marx, Karl (Frederick Engels, editor) / Used - Hardcover | | $2,750.00 |
| The Theory of Moral Sentiments Smith, Adam / Used - Hardcover | | $1,800.00 |
| Foundations of the Social Sciences, The Structure of Scientific Revolutions, Science and the Structure of Ethics, Theory of Valuation, (and) The Technique of Theory Construction (International Encyclopedia of Unified Science Volume II, Nos. 1-5) Neurath, Otto, Thomas S. Kuhn, Abraham Edel, John Dewey, (and) J.H. Woodger / Used - Hardcover | | $1,200.00 |
| The Open Society and Its Enemies Popper, Karl R. / Used - Hardcover | | $750.00 |
| The Lord of the Rings (The Fellowship of the Ring, The Two Towers, The Return of the King) Tolkien, J.R.R. / Used - Hardcover | | $450.00 |
| An Essay Concerning Human Understanding, to which are now added I. An Analysis of Mr. Locke's Doctrine of Ideas, on a Large Sheet, II. A Defence of Mr. Locke's Opinion concerning personal Identity, with an Appendix, III. A Treatise on the Conduct of Understanding, IV. Some Thoughts concerning Reading and Study, for a Gentleman, V. Elements of Natural Philosophy, VI. A new Method of a Common-Place-Book, to which is prefixed The Life of the Author: Volume I, II and III Locke, John / Used - Hardcover | | $450.00 |
| The Constitution of Liberty Hayek, F.A. / Used - Hardcover | 1st Edition | $325.00 |
| The Copernican Revolution Kuhn, Thomas S. / Used - Hardcover | 1st Edition Fine/VG+ Dust Jacket | $275.00 |
| Essays Moral, Economical, and Political Bacon, Francis / Used - Hardcover | | $200.00 |
| Matter and Memory Bergson, Henri (Nancy Margaret Paul and W. Scott Palmer, translators) / Used - Hardcover | | $175.00 |
| On True and False Ideas Arnauld, Antoine (Stephen Gaukroger, translator and Introductory Essay) / Used - Hardcover | 1st Edition Fine/VG+ Dust Jacket | $145.00 |
| Essays and Treatises on Various Subjects: with a Brief Sketch of the Author's Life and Writings, to which are added Dialogues Concerning Natural Religion Hume, David / Used - Hardcover | | $125.00 |
| Mind Energy Bergson, Henri (H. Wildon Carr, translator) / Used - Hardcover | | $125.00 |
| The Analysis of Matter Russell, Bertrand / Used - Hardcover | | $95.00 |
| In Praise of Idleness and Other Essays Russell, Bertrand / Used - Hardcover | | $90.00 |
| Elements of Political Economy Mill, James / Used - Hardcover | | $90.00 |
| Voltaire and Rousseau Against the Atheists; or, Essays and Detached Passages from Those Writers, in Relation to the Being and Attributes of God Akerly, J., editor/translator / Used - Hardcover | | $75.00 |
| Capital_ A Critique of Political Economy: Volume II, The Process of Circulation of Capital Marx, Karl (Fredeick Engels, editor) / Used - Hardcover | | $75.00 |
| Why Men Fight Russell, Bertrand / Used - Hardcover | Dust Jacket | $75.00 |
| Considerations on Representative Government Mill, John Stuart / Used - Hardcover | | $65.00 |
| The Grundrisse Marx, Karl, and David McClellan, editor/translator / Used - Hardcover | | $65.00 |
| Anthem Rand, Ayn / Used - Hardcover | | $65.00 |
| Leibniz: Logical Papers Leibniz, Gottfried, and G.H.R. Parkinson, editor/translator / Used - Hardcover | | $60.00 |
| Language and Myth Cassirer, Ernst (Sausanne K. Langer, translator) / Used - Hardcover | | $60.00 |
| Our Knowledge of the External World Russell, Bertrand / Used - Hardcover | | $60.00 |
| The Logical Syntax of Language Carnap, Rudolf (C.K. Ogden, editor) / Used - Hardcover | Dust Jacket | $60.00 |
| A System of Logic, Ratiocinative and Inductive; being a connected view of The Principles of Evidence and the Methods of Scientific Investigation Mill, John Stuart / Used - Hardcover | | $55.00 |
| Appeal to Conservatives (Appel aux Conservateurs) Comte, Auguste / Used - Hardcover | | $55.00 |
| An Essay Concerning Human Understanding and A Treatise on the Conduct of the Understanding (Locke's Essays) Locke, John / Used - Hardcover | | $50.00 |
| Essays and Apothegms of Francis Lord Bacon Buchan, John, editor and Introduction (and Francis Lord Bacon) / Used - Hardcover | | $50.00 |