An Examination of Sir William Hamilton's Philosophy, first published in 1865, with a second edition in the same year, and third and fourth editions in 1867 and 1872, has long been out of print. The Examination was, for his contemporaries, a most significant and popular work, presenting an extended treatment of some matters central to empiricism that found little space in Mill's Logic, the best known being his treatment of matter and mind from a psychological viewpoint.

Appearing just before his successful parliamentary candidature, the Examination, with its deliberate and explicit onslaught on the intuitionists who were, in Mill's view, allied with anti-progressive political and religious forces, brought his beliefs into the public arena in a new way. Some of those who supported him politically found themselves viciously attacked because they had associated themselves with one who assailed settled religious beliefs. Other religionists who rejected many of Mill's attitudes strong expressed their admiration of the Examination because of its exposure to what they, with him, saw as dangerous theological and moral positions.

Alan Ryan's analytical and historial introduction dwells on the most significant philosophical elements in the work, placing them in perspective and showing their relations to other aspects of Mill's thought. The textual introduction, by John M. Robson, examines the treatise in context of Mill's life in the 1860s, outlines its composition, and discusses, among other matters, the importance of the extensive revisions Mill made, mostly in response to critics. These revisions appear in full in the textual apparatus. Also provided are a bibliographical index, which gives a guide to the literature on the subject, and a collation of Mill's quotations, an analytical index, and appendices giving the reading of manuscript fragments and listing textual emendations.

One of the English-speaking world’s most influential philosophers, John Stuart Mill (1806-1873) wrote on countless topics, including logic, politics, women’s rights, legal history, medicine, and the philosophy of science.

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Alan Ryan was Warden of New College, Oxford, and Professor of Politics at the University of Oxford, and is currently a lecturer at Princeton University.

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JOHN M. ROBSON was born educated in Toronto, graduating from the University of Toronto (B.A. 1951, M.A. 1953, PH.D. 1956). After lecturing at the University of British Columbia and the University of Alberta, he joined the staff as Victoria College, University of Toronto, where he is now Professor of English. He is Associate Editor of the Collected Works of John Stuart Mill, and he also edited Edmund Burke’s Appel from the New to the Old Whigs, J.S. Mill: A Selection, and Editing Nineteenth-Century Texts.

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