敵を知り己を知れば百戦危うからず
てきをしりおのをしればひゃくせんあやうからず
know your enemy, know thyself, and you shall not fear a hundred battles
敵を知り己を知らば百戦危うからず is read as てきをしりおのをしらばひゃくせんあやうからず (teki o shiriono o shirabahyakusenayaukarazu) and means know your enemy, know thyself, and you shall not fear a hundred battles.
てきをしりおのをしらばひゃくせんあやうからず
teki o shiriono o shirabahyakusenayaukarazu
てきをしりおのをしればひゃくせんあやうからず
know your enemy, know thyself, and you shall not fear a hundred battles
かれをしりおのれをしればひゃくせんあやうからず
if you know your enemy and know yourself, in a hundred battles you will never be defeated