“Three things tell a man: his eyes, his friends and his favorite quotes.”
Sun Tzu (Chinese Philosopher)
Sun Tzu is an honorific title bestowed upon Sūn Wǔ , the author of The Art of War, an immensely influential ancient Chinese book on military strategy. He is also one of the earliest realists in international relations theory.
In the author's name, Sūn Wǔ, the character wu, meaning "military", is the same as the character in wu shu, or martial art. Sun Wu also has a courtesy name, Chang Qing .