{"schema_version":"bf_book_companion_v1","release_id":"20260402T191500Z-bisacv2site-fullset","book":{"amazon_purchase_url":"https://www.amazon.com/dp/0486421309?tag=bookfrontier-20","asin":"0486421309","authors":["John Stuart Mill"],"book_id":"9780486421308","canonical_url":"https://bookfrontier.com/books/9780486421308","cover_image_url":"https://img.bookfrontier.com/9780486421308.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T10%3A13%3A18Z","description":"Discussed and debated from time immemorial, the concept of personal liberty went without codification until the 1859 publication of On Liberty . John Stuart Mill's complete and resolute dedication to the cause of freedom inspired this treatise, an enduring work through which the concept remains well known and studied. The British economist, philosopher, and ethical theorist's argument does not focus on \"the so-called Liberty of the Will…but Civil, or Social Liberty: the nature and limits of the power which can be legitimately exercised by society over the individual.\" Mill asks and answers provocative questions relating to the boundaries of social authority and individual sovereignty. In powerful and persuasive prose, he declares that there is \"one very simple principle\" regarding the use of coercion in society — one may only coerce others either to defend oneself or to defend others from harm. The new edition offers students of political science and philosophy, in an inexpensive volume, one of the most influential studies on the nature of individual liberty and its role in a democratic society.","forthcoming":false,"isbn13":"9780486421308","publication_date":"20020619","publisher":"Dover Publications","slug":"on-liberty","subtitle":"","title":"On Liberty"},"discovery":{"categories":{"all":[{"bisac_code":"POL042050","confidence_band":"medium","label":"Libertarianism","score":0.8004,"source":"bisac_hint_model"},{"bisac_code":"LIT025030","confidence_band":"high","label":"Politics in Literature","score":0.7809,"source":"bisac_hint_model"},{"bisac_code":"SOC026040","confidence_band":"medium","label":"Social Theory","score":0.7501,"source":"bisac_hint_model"}],"hint":[{"bisac_code":"POL042050","confidence_band":"medium","label":"Libertarianism","score":0.8004,"source":"bisac_hint_model"},{"bisac_code":"LIT025030","confidence_band":"high","label":"Politics in Literature","score":0.7809,"source":"bisac_hint_model"},{"bisac_code":"SOC026040","confidence_band":"medium","label":"Social Theory","score":0.7501,"source":"bisac_hint_model"}],"publisher":[{"bisac_code":"PHI019000","confidence_band":"high","label":"Political Philosophy","score":1,"source":"onix_publisher_code"},{"bisac_code":"PHI030000","confidence_band":"high","label":"Utilitarianism","score":1,"source":"onix_publisher_code"},{"bisac_code":"PHI035000","confidence_band":"high","label":"Philosophy Writing","score":1,"source":"onix_publisher_code"},{"bisac_code":"POL035010","confidence_band":"high","label":"Human Rights","score":1,"source":"onix_publisher_code"}]},"genres":[{"label":"Libertarianism","score":0.8004,"slug":"libertarianism"},{"label":"Politics in Literature","score":0.7809,"slug":"politics-in-literature"},{"label":"Social Theory","score":0.7501,"slug":"social-theory"}],"reader_fit":["Good for readers who enjoy Libertarianism","Good for readers interested in crime","Good for fans of Philosophy"],"related_lists":[],"series":null,"similar_books":[{"authors":["Timothy Sandefur"],"book_id":"9781964524856","cover_image_url":"https://img.bookfrontier.com/9781964524856.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T10%3A13%3A18Z","score":14.6532,"title":"You Don't Own Me","url":"https://bookfrontier.com/books/9781964524856"},{"authors":["Alexis de Tocqueville","Arthur Goldhammer"],"book_id":"9781931082549","cover_image_url":"https://img.bookfrontier.com/9781931082549.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T10%3A13%3A18Z","score":12.4023,"title":"Alexis De Tocqueville: Democracy in America (LOA #147)","url":"https://bookfrontier.com/books/9781931082549"},{"authors":["Louis Hartz","Kenneth D. 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