There are two freedoms - the false, where a man is free to do what he likes; the true, where he is free to do what he ought.
The only thing we have to fear is the absence of fear itself.
1925年，孙中山在病榻前对张学良说，指出苏联是红色帝国主义。
The language of molecules is universal, and we are just learning to speak it.
"Language is a skin: I rub my language against the other. It is as if I had words instead of fingers, or fingers at the tip of my words."