This is the first-ever English-language edition of the book Leo Tolstoy considered to be his most important contribution to humanity. Widely read in pre-Revolutionary Russia, banned and forgotten under Communism, and recently rediscovered to great excitement, "A Calendar of Wisdom" is a day-by-day guide that illuminates the path of life. It deserves to take its rightful place beside the few books that will never cease teaching us the essence of what is important in life.