Book excerpt: In his much quoted, seminal work, On Liberty, John Stuart Mill attempts to establish standards for the relationship between authority and liberty. He emphasizes the importance of individuality which he conceived as a prerequisite to the higher pleasures-the summum bonum of Utilitarianism. Published in 1859, On Liberty presents one of the most eloquent defenses of individual freedom and is perhaps the most widely-read liberal argument in support of the value of liberty.