The law of nature is the fundamental wisdom.
自然界的法则是智慧的根本。
用心最重要的是光明坦诚，外表最重要的是要正直沉稳，说话最重要的是要简洁真诚。
【释义】要广博地学习文化知识，同时要用羞耻心来约束自己的行为。
I went to the woods because I wanted to live deliberately. I wanted to live deep and suck out all the marrow of life. To put to rout all that was not life. And not, when I had come to die, discover that I had not lived.