the art of war..........sun tzu

I've just finished the book. An old Chinese writing...A Very interesting book,with 13 chapters, it all talks about the ethics, philosophy, management and about winning a WAR. The Information are old and classic, but like reading a newspaper the topics, problems, tactics and situations are almost the same? Do people evolve or grow? Maybe just prove that history repeat itself. These are thousand year old writings but can still relate in modern society, the books recommendations can still be applied, in business,politics,family,warfare and other matters, a good leadership manual..but reading it once may not gain it entire meanings...
"If you know the enemy and know yourself, you need not fear the re sult of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor self , you will succumb in every battle..." Sun Tzu