The Cossacks by Leo Tolstoy
Descriptive text is from goodreads.com:
To read Tolstoy's early sketch, The Raid, and his first novel, The Cossacks, is to enter the workshop of a great writer and thinker. In The Raid Tolstoy explores the nature of courage itself, a theme central to War and Peace. In The Cossacks he sets forth all the motifs of his whole future life and his work. The hero is a young man-about-town who has squandered half his fortune - and his life - and retires to the desultory existence of a regiment stationed in mountainous Cossack country, where he takes part in the daily life of a Cossack village. But his love for the beautiful Maryanka precipitates a conflict between the belief that "Happiness lies in living for others" and a passion that sweeps self-abnegation aside. As Romain Roland says, "The full force of Tolstoy's descriptive powers is already expressed in this splendid [novel] and Tolstoy's realism shows itself with equal force in depicting human nature."
Download: The Cossacks by Leo Tolstoy, Translated by Louise and Aylmer Maude (.epub)