War and Peace is a literary work mixed with chapters on history and philosophy by the Russian author Leo Tolstoy. It was first published serially, then published in its entirety in 1869. It is regarded as one of Tolstoy's finest literary achievements and remains an internationally praised classic of world literature. Book 8: 1811-12: After Prince Andrew's engagement to Natásha, Pierre without any apparent cause suddenly felt it impossible to go on living as before. Firmly convinced as he was of the truths revealed to him by his benefactor, and happy as he had been in perfecting his inner man, to which he had devoted himself with such ardor-all the zest of such a life vanished after the engagement of Andrew and Natásha and the death of Joseph Alexéevich.