The first volume of the Collected Works of L. N. Tolstoy includes the writer’s early works of art - the trilogy “Childhood”, “Adolescence”, “Youth”. An amazing, poignant and lyrical trilogy, in which Leo Tolstoy invested many autobiographical motifs. The life of Nikolenka Irtenev, a boy from an aristocratic Russian family, passes before the reader day after day - children's games, relationships with friends, first love, the death of his mother, ridiculous and funny mistakes the first steps “in the world”, which seem fateful and tragic in youth. The hero of the trilogy grows up literally before our eyes - and we involuntarily experience his joys and sorrows, victories and defeats as our own. In the section “Unfinished. Sketches" unfinished excerpts "The History of Yesterday" and "Yuletide Night" are printed. The text of the book was translated from the original language using an artificial intelligence program. For the most part, the translation of the text is of very high quality, but in some cases, due to the imperfection of the technology, there may be incorrect phrase translations in the text, as well as single words and expressions may not be translated.