彼を知り己を知れば、百戦殆からず
Expression
1
expressions (phrases
proverb
if you know your enemy and know yourself, in a hundred battles you will never be defeated;know your enemy
from Sun Tzu's The Art of War
Other forms
彼を知り己を知れば百戦殆からず 【かれをしりおのれをしれば、ひゃくせんあやうからず】 (search-only kanji form)