Sun Tzu and dated his lifetime to 544–496 BC. Modern scholars accepting his historicity nonetheless place the existing text of "The Art of War" in the later Warring States period based upon its style of composition and its descriptions of warfare. Traditional accounts state that the general's descendant Sun Bin also wrote a treatise on military tactics, also titled "The Art of War". Since both Sun Wu and Sun Bin were referred to as Sun Tzu in classical Chinese texts, some historians believed them identical prior to the rediscovery of Sun Bin's treatise in 1972. Sun Tzu's work has been praised and
What Is Art? to justify their own tastes. Jahn notes the "often confusing use of categorisation" and the lack of definition of the key concept of emotion. Bayley writes that "the effectiveness of "What is Art?" lies not so much in its positive assertions as in its rejection of much that was taken for granted in the aesthetic theories of the time". Noyes criticises Tolstoy's dismissal of beauty, but states that, "despite its shortcomings", "What is Art?" "may be pronounced the most stimulating critical work of our time". Simmons mentions the "occasional brilliant passages" along with the "repetition, awkward language, and loose terminology".