The Second Treatise is one of the most important political treatises ever written and one of the most far-reaching in its influence. In his provocative 15-page introduction to this edition, the late eminent political theorist C. B. Macpherson examines Locke's arguments for limited, conditional government, private property, and right of revolution and suggests reasons for the appeal of these arguments in Locke's time and since.

Locke argued that religious belief ought to be compatible with reason, that no king, prince or magistrate rules legitimately without the consent of the people, and that government has no right to impose religious beliefs or styles of worship on the public. Locke’s defense of religious tolerance and freedom of thought was revolutionary in its time. Even today, his letter poses a challenge to religious intolerance, whether state-sponsored or originating from religious dogmatists. Based on both Locke’s original Latin and the seventeenth-century English translation of William Popple, this edition offers a reader-friendly version that remains loyal to the original text. In addition to a forty-page introduction that situates the Letter in its historical and philosophical contexts, this edition includes excerpts from writings on religious toleration by William Penn, Baruch Spinoza, Pierre Bayle, and Samuel von Pufendorf, as well as generous selections from the famous Locke-Proast debates on religious toleration.

Inspired by Voltaire’s advice that a text needs to be concise to have real influence, this anthology contains fiery extracts by forty eighteenth-century authors, from the most famous philosophers of the age to those whose brilliant writings are less well-known. These passages are immensely diverse in style and topic, but all have in common a passionate commitment to equality, freedom, and tolerance. Each text resonates powerfully with the issues our world faces today. Tolerance was first published by the Société française d’étude du dix-huitième siècle (the French Society for Eighteenth-Century Studies) in the wake of the Charlie Hebdo assassinations in January 2015 as an act of solidarity and as a response to the surge of interest in Enlightenment values. With the support of the British Society for Eighteenth-Century Studies, it has now been translated by over 100 students and tutors of French at Oxford University.

Limborch's edition and Popple's translation, as on whether it is true that Popple translated the Epistola into English 'a l'insu de Mr Locke', and consequently whether Locke was right or wrong in saying that the translation was made 'without my privity'. Long research into documents hitherto unpublished, or little known, or badly used, has persuaded me that Locke not only knew that Popple had undertaken to translate the Gouda Latin text, but also that Locke followed Popple's work very closely, and even that the second English edition of 1690 was edited by Locke himself. In these circumstances it does not seem possible to speak of an original text, that in Latin, and an English translation; rather they are two different versions of Locke's thoughts on Toleration. The accusations of unreliability levelled at Popple therefore fall to the ground, and the Latin and English texts acquire equal rights to our trust, since they both deserve the same place among Locke's works. Consequently the expression 'without my privity', which a number of people had seen as revealing an innate weakness in Locke's moral character, reacquires its precise meaning: testifying to Locke's profound modesty and integrity.