None of Mill’s major writings remain independent of his moral, political, and social agenda. Even the most abstract works, such as the System of Logic and his Examination of Sir William Hamilton’s Philosophy, serve polemical purposes in the fight against the German, or a priori, school otherwise called “intuitionism.” On Mill’s view, intuitionism needed to be defeated in the realms of logic, mathematics, and philosophy of mind if its pernicious effects in social and political discourse were to be mitigated.
In his writings, Mill argues for a number of controversial principles. He defends radical empiricism in logic and mathematics, suggesting that basic principles of logic and mathematics are generalizations from experience rather than known a priori. The principle of utility—that “actions are right in proportion as they tend to promote happiness; wrong as they tend to produce the reverse of happiness”—was the centerpiece of his ethical philosophy. On Liberty puts forward the “harm principle” that “the only purpose for which power can be rightfully exercised over any member of a civilized community, against his will, is to prevent harm to others.” In The Subjection of Women, he compares the legal status of women to the status of slaves and argues for equality in marriage and under the law.
This article provides an overview of Mill’s life and major works, focusing on his key arguments and their relevant historical contexts.
