Sun Tzu proved on the battlefield that his theories were effective (for example, at the Battle of Boju), that he had a successful military career, and that he wrote "The Art of War" based on his tested expertise. However, the "Zuozhuan", a historical text written centuries earlier than the "Shiji", provides a much more detailed account of the Battle of Boju, but does not mention Sun Tzu at all. Beginning around the 12th century, some scholars began to doubt the historical existence of Sun Tzu, primarily on the grounds that he is not mentioned in the historical classic "Zuo zhuan", which mentions
What Is Art? art. In short, new artists imitate the classics, setting their own feelings aside, which, according to Tolstoy, is contrary to the point of art. Art schools teach people how to imitate the method of the masters, but they cannot teach the sincerity of emotion that is the propellant of great works. In Tolstoy's words, "[n]o school can call up feelings in a man, and still less can it teach a man what is the essence of art: the manifestation of feeling in his own particular fashion". Throughout the book Tolstoy demonstrates a willingness to dismiss generally accepted masters, among them