The publication of articles and letters by Arthur Conan Doyle allows us to gain a new understanding of the work of the remarkable English writer as a whole. Conan Doyle's journalistic legacy is very large; it covers a wide range of topics, reflecting the entire range of extraordinary interests of this outstanding man in various fields of science, social life and spiritual quests: from medicine, history, politics, religion, art to occult phenomena. In all these publications, Conan Doyle appears again and again as a man endowed with powerful common sense and independent judgment, as a man whose views and ideas aimed at the improvement of his compatriots deserve to be heard by us.