This book brings together J.S. Mill's On Liberty and a selection of influential essays on Mill's Liberalism by a number of eminent Mill scholars, including Isaiah Berlin, Alan Ryan, John Rees, C.L. Ten, and Richard Wollheim. As well as comprising a convenient collection of authoritative commentary upon On Liberty for the use of teachers and students, the essays also reflect a broader debate about the philosophical foundations of Mill's liberalism, particularly the question of the connection between Mill's professed utilitarianism and his committment to individual liberty. In a substantial introduction the editors survey the debate and conclude that the outcome has profound and disturbing implications, both for our understanding of Mill's classic defence of individual freedom and more generally for the style of liberal argument with which Mill is typically identified