The book is devoted to an analysis of the contexts of the works of the English thinker John Locke (1632–1704), published anonymously during his lifetime and called “his own” only in his will: “Two Treatises on Government”, “An Epistle on Tolerance” and “The Reasonability of Christianity” . It is hypothesized that the lost “middle” part of the “Two Treatises” was devoted to the issue of tolerance. In place of this missing part, Locke's friends published the pamphlet "Epistola de Tolerantia", and then its translation into English. The thesis about the separation of church and state as the most important requirement of Christianity is at the center of Locke's political thought. In “The Reasonableness of Christianity,” Locke discusses overcoming discord among Christians, proposing the principles of sincere reading and understanding of the Holy Scriptures, free from blind adherence to “systems” and necessary for personal salvation. For a wide range of readers interested in the intellectual and political history of Europe in the second half of the 17th century.