如果你不害怕，你会做什么？

Talkers are usually more articulate than doers, since talk is their specialty.

量子理论是一个绝佳的例子，展示了理论如何既奇特又真实。

It's not a rebel song, it's 'Sunday Bloody Sunday'.

【译文】不担心别人不了解自己，就怕自己没有能力。

学习数学的唯一方法就是做数学。