Opera Hactenus Inedita Rogeri Baconi: Metaphysica Fratris Bogeri is a book by Roger Bacon, a medieval English philosopher and Franciscan friar. The book was published in 1905 and contains previously unpublished works by Bacon, including his Metaphysica Fratris Bogeri. The Metaphysica is a philosophical treatise that explores the nature of reality and the relationship between God and the world. It is written in a highly technical and complex style,...