Sun Tzu's Art of War is the oldest military classic in Chinese literature. Its also the most revered and well known military text outside China. While its exact origin and authorship have been debated, scholars of military history are unanimous that the book existed, and was probably written round 400 to 320 BC, 100 years after the births of Confucious and Lao Tze, two well-known Chinese philoshophers. Thus the book is today over 2300 years old. The significance and importance of Sun Tzu's work in influencing military thought has seldom been questioned. For example, even modern-day military writing and thinking bears much inspiration from the works of Sun Tzu.