text: This man opened one book by aligning his own views with Socrates listening to "the old Protagoras" and rebutting"the so-called Sophist.
full_question: This man opened one book by aligning his own views with Socrates listening to "the old Protagoras" and rebutting"the so-called Sophist." This man described syllogisms as "ratiocination" in a text which laid out reasoning"ratiocinative" and "inductive." In this man's simple theory of names, a name's meaning is merely thething it refers to and nothing more. After suffering a mental breakdown at age twenty from the prodigy trainingregimen of his philosopher father James, this thinker wrote A System of Logic, and collaborated with his loverHarriet Taylor on an 1869 text in favor of female equality. For 10 points, name this English author of The Subjectionof Women, whose major writings defended maximal liberty and utilitarianism. 
first_sentence: This man opened one book by aligning his own views with Socrates listening to "the old Protagoras" and rebutting"the so-called Sophist.
raw_answer: John Stuart Mill