text: This thinker wrote an essay discussing the rights of "civilized" nations in dealing with "barbarous" ones in his essay
full_question: This thinker wrote an essay discussing the rights of "civilized" nations in dealing with "barbarous" ones in his essay A Few Words on Non-Intervention. This thinker included residues and concomitant variations in his namesake "methods of experimental inquiry" in the treatise A System of Logic. This philosopher equated marriage with slavery in an essay he wrote with his wife, Harriet Taylor. This man wrote that intellectual pleasures are preferable to sensual pleasures, modifying the greatest-happiness principle of Jeremy Bentham. For 10 points, name this English philosopher who wrote The Subjection of Women, Utilitarianism, and On Liberty.
first_sentence: This thinker wrote an essay discussing the rights of "civilized" nations in dealing with "barbarous" ones in his essay
raw_answer: John Stuart Mill [or J. S. Mill]