不要担心你在数学上遇到的困难；我敢保证我遇到的困难比你还大得多。

We are all born with a certain package. We are who we are: where we were born, who we were born as, how we were raised. We're kind of stuck inside that person, and the purpose of civilization and growth is to be able to reach out and empathize a little bit with other people.

祸患转化为幸福，把失败作为成功的根基。如能留的青山在，就不怕没柴烧。

我不害怕失败，不害怕跌倒。这就是生活，跌倒了就爬起来。

In the landscape of string theory, there are perhaps 10^500 different vacuum states, each corresponding to a different possible universe.