Li Quan
There are numerous theories concerning when the text was completed and concerning the identity of the author or authors, but archeological recoveries show "The Art of War" had taken roughly its current form by at least the early Han. Because it is impossible to prove definitively when the "Art of War" was completed before this date, the differing theories concerning the work's author or authors and date of completion are unlikely to be completely resolved. Some modern scholars believe that it contains not only the thoughts of its original author but also commentary and clarifications from later military theorists, such as Li Quan and Du Mu.