The works of the Russian writer, publicist, philosopher Konstantin Leontyev (1831–1891) are widely known in Russia and abroad. The reader is practically unfamiliar with the epistolary heritage of this most interesting author. With the exception of a small collection published in Paris in the 1950s, his correspondence has never been published separately. Meanwhile, the letters provide the most vivid and meaningful insight into his worldview, since it was in them that he openly, without resorting to internal censorship, expressed his original (for contemporaries, sometimes shockingly original) judgments and views. The publication includes excerpts from letters that are most significant for recreating the psychological portrait of Konstantin Leontyev and the picture of his life. Among them are messages to A. A. Fet, Prosper Merima, V. V. Rozanov, I. S. Aksakov, N. P. Ignatiev, Leontiev’s letters to his young admirers - in fact, micro-treatises reflecting the author’s worldview at the very end of his life . The collection of letters included in this book can be called a kind of autobiography of an outstanding thinker. The publication was compiled and prepared by the remarkable St. Petersburg historian, literary critic, and translator D. V. Solovyov.