"The Art of War" is an ancient Chinese military treatise that is attributed to Sun Tzu (also referred to as «Sunzi» and «Sun Wu»), a high ranking military general, strategist and tactist. The Art of War has also been applied to business and managerial strategies. Composed of 13 chapters, each of which is devoted to one aspect of warfare. It is said to be the definitive work on military strategies and tactics of its time, and is still read for its military insight which can be applied to business and managerial strategies as well. Sun Tzu was a Chinese general, military strategist, and philosopher who lived in the Spring and Autumn period of ancient China. Sun Tzu is traditionally credited as the author of The Art of War, a widely influential work of military strategy that has affected both Western and Eastern philosophy. Aside from his legacy as the author of The Art of War, Sun Tzu is revered in Chinese and the Culture of Asia as a legendary historical figure. His birth name was Sun Wu, and he was known outside of his family by his courtesy name Changqing. The name Sun Tzu by which he is best known in the West is an honorific which means «Master Sun».