信心不是乐观或悲观，也不是性格特征。它是对积极结果的期待。
Confidence isn't optimism or pessimism, and it's not a character attribute. It's the expectation of a positive outcome.
Quality is never an accident; it is always the result of intelligent effort.
I don't feel like I have to please anyone. I feel free. I feel like I'm an adult. I'm grown. I can do what I want. I can say what I want. I can retire if I want. That's why I've worked hard.
Exile is strangely compelling to think about but terrible to experience.
科学是关于理解我们周围的世界，这种理解可以带来令人难以置信的进步。