Better prepared than unprepared. In fact, this is what Sun Tzu said in the Art of War: Zhi Zhi gains by planning accurately and carefully before acting, knowing that it will gain by stopping at the right time. Sun Tzu's Art of War, also known as Sun Tzu, Sun Wu's Art of War, Sun Tzu's Art of War and Wu Sun Tzu's Art of War, was generally written by Sun Wu, a native of Qi in the Spring and Autumn Period.