心有其所不知的理由。

I don’t take no for an answer.

She was becoming herself and daily casting aside that fictitious self which we assume like a garment with which to appear before the world.

在我们这个发人深省的时代，最发人深省的是我们仍然没有思考。

I don't think about age. People who tell me I'm too old to do something, I just ignore them.

有一个现象的明显程度已经让我毛骨悚然，这便是我们的人性已经远远落后我们的科学技术了。

定理是数学的里程碑。