过去是一面映照当下的镜子。
The past is a mirror that reflects the present.
解释:上等的医生能够医治国家,次一等的只会医治病人,这本来就是医生的职守。
你知道得越多,就越意识到自己知道得多么少。
文章必须对天下人有益处。
The knowledge of the circumstances of which we must make use never exists in concentrated or integrated form, but solely as the dispersed bits of incomplete and frequently contradictory knowledge which all the separate individuals possess.