It is not because certain things are difficult that we do not dare;it is because we do not dare that things are difficult.

History is not the past. It is the present. We carry our history with us. We are our history.

听到了却没有亲眼见到，即使听得再多，也必有谬误；亲眼见到了却不能理解，即使记得再多，也必有错误；知道了却不去实际践行，就是知识再多，也必然困惑。

The next generation of scientists will solve problems we can’t even imagine today.

【释义】君子的行为，行动时要思考是否符合道义，不为利益所诱惑，不为道义而感到愧疚。