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
Works attributed to Florus Hadrian's rule. Works attributed to Florus Three main sets of works are attributed to Florus (a Roman cognomen): Virgilius orator an poeta, an Epitome of Roman History and a collection of poems (26 tetrameters, and five hexameters about roses). As to whether these were composed by the same person, or set of people, is unclear, but the works are variously attributed to: The introduction to a dialogue called "Virgilius orator an poeta" is extant, in which the author (whose name is given as Publius Annius Florus) states that he was born in Africa, and at an early age took part