Although his political writings were primarily intended to justify the Revolution of 1688, Locke's work has a perennial interest as a classical statement of the principles of English constitutional government. It is fitting that our age, in which these principles are challenged from both right and left wings, should consider them afresh. Mr. Gough has made use of the Lovelace Collection of Locke's papers recently acquired by the Bodleian Library, and though this book is not a continuous account of the Whole of Locke's political philosophy, he deals with most of its salient features, such as the law of nature the rights of individuals and government by consent, the defence of private property, the idea of trusteeship and the case for toleration.