Every discovery in science opens up a new set of questions, and that's what makes it so exciting.
物理学家必须能够想象。
I'm not a silence, I'm a scream.
Everyone is in favor of free speech. Hardly a day passes without its being extolled, but some people's idea of it is that they are free to say what they like, but if anyone else says anything back, that is an outrage.