If you know the enemy and know yourself, you need not fear the result of a hundred battles.
- Source
- The Art of War, III.18 (Attack by Stratagem), trans. Lionel Giles
- Written
- c. 5th century BC
About this quotation
Giles’s next sentences continue, “If you know yourself but not the enemy, for every victory gained you will also suffer a defeat.” The line is the last paragraph of the chapter.