了解自己。要了解自己的天赋、才智、判断和倾向。不了解自己的人无法掌控自己。世上有可以照脸的镜子，却没有照出心灵的镜子。那么，就用认真的自省来代替吧！当你忽略外部形象时，就会不断提升、完善内在形象。学会估量你的才智与做事能力，检验自己的勇气，以便加以运用。稳固你的根基，保持头脑清醒，以应对一切事情。
know yourself－in talents and capacity, in judgment and inclination. you cannot master yourself unless you know yourself. there are mirrors for the face but none for the mind. let careful thought about yourself serve as a substitute. when the outer image is forgotten, keep the inner one to improve and perfect. learn the force of your intellect and capacity for affairs, test the force of your courage in order to apply it, and keep your foundations secure and your head clear for everything.
