世界上最好和最美丽的东西是看不见甚至摸不到的 - 它们必须用心去感受。

The universe is not just stranger than we imagine, it is stranger than we can imagine.

到处卑躬屈膝，可笑你的头为什么有仇于天而又有恩于地而抬不起来？终日谋尽计算，问你的心为什么轻生命而重钱财？

Persistence is very important. You should not give up unless you are forced to give up.

The first duty of a man is to think for himself.