文／春秋．孫子（約545～470B.C.E.）

知彼知己，百戰不殆；

不知彼而知己，一勝一負；

不知彼不知己，每戰必殆。

──選自《孫子兵法》

Attack by Stratagem(Excerpt)

Sunzi (Approx. 545 BCE - 470 BCE,

Spring and Autumn Period)

English translation: Lionel Giles

If you know the enemy and know yourself, you need not fear the result 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 yourself, you will succumb in every battle.

──from Sunzi Bingfa

(The Art of War)