In the aftermath of the terrorist attacks of September 11, 2001, the philosophy of John Stuart Mill has never been more relevant. Can we reconcile individual liberty with the demands of the common good? Mill's central concern was to modify the Utilitarian ethical theory of Jeremy Bentham and his father, James Mill, in a manner that would safeguard human rights. However, many philosophers - most notably John Rawls - have argued that Mill's attempt was either inconsistent or incoherent. This new reading of Mill defends him against these charges, and shows the value of his approach to the world we live in today. John Fitzpatrick argues that, properly understood, Mill's liberal utilitarianism can indeed support a system of rights rich enough to guarantee individual liberty. Combining fresh interpretations of Mill's writings on ethics, politics, and political economy with the historical Mill that can found in his autobiography, the book will be of substantial interest to a wide audience.