As the ancients said, know yourself and your enemy.
正如古人所说，了解自己和敌人。
该句使用了简单的祈使结构表达古人观点。
"I do not meet competition with force but with intellect to defeat my competitors"
"True wisdom lies in adopting suggestions selectively."
"Speech is silver, silence is golden."
"Even today, Zhuge Liang's wisdom continues to be celebrated."
"The wise understand illusions and let them go in time."