Speech is a kind of action， and our words are the tools we use to perform it.

One does not ask of one who suffers: What is your country and what is your religion? One merely says: You suffer, that is enough for me.

最深的伤口往往是肉眼看不见的。

科学中的每一个发现都是更接近理解我们在宇宙中的位置的一步。