De Doctrina Christiana (transl. On Christian Doctrine) is a theological treatise of the English poet and thinker John Milton (1608–1674), containing a systematic exposition of his religious views. The Latin manuscript "De Doctrina" was found in 1823 and published in 1825. The authorship of the work is debatable. In favor of the theory of the non-authenticity of the text, comments are made both over its content (it contradicts the ideas of his other works, primarily the poems "Paradise Lost" and "Paradise Regained"), and it is difficult to imagine that such a complex text could be written by a blind person (Milton was blind by the time of the work's creation, thus it is now assumed that an amanuensis aided the author). However, after nearly a century of interdisciplinary research, it is generally accepted that the manuscript belongs (at least in part) to Milton. The course of work on the manuscript, its fate after the death of the author, and the reasons for which it was not published during his lifetime are well established. The most common nowadays point of view on De Doctrina Christiana is to consider it as a theological commentary on poems.The history and style of Christian Doctrine have created much controversy. Critics have argued about the authority of the text as representative of Milton's philosophy based on possible problems with its authorship, its production, and over what its content actually means. As Lieb has shown "... I do not think we shall ever know conclusively whether or not Milton authored all of the De Doctrina Christiana, part of it, or none of it."The work has been translated into English three times: by Charles R. Sumner in 1825, by John Carey in 1973, and by John K. Hale and J. Donald Cullington in 2012. Source: Wikipedia (en)