In 1605, Bacon published a two-book treatise in English, “The Proficiency and Advancement of Learning, Divine and Human,” in which he argued for the great importance of the sciences for humanity and outlined the idea of their classification. Seventeen years later, in a letter to Baranzan, dated the end of June 1622, he reports that he had sent his new work on the meaning and development of the sciences for translation. Bacon had in mind "De Dignitate et Augmentis Scientiarum", which was published in Latin in the autumn of the following 1623. This work, consisting of 9 books, is the most extensive and systematic of Bacon's philosophical works and is intended to represent the first part of his life's work " Instauratio Magna Scientiarum.” It contains a classification of all human knowledge, an assessment of the level already achieved, Bacon’s understanding of the prospects and directions of its further development, as well as a description of the scientific method, its tasks and goals.