Curiosity is the driving force behind all scientific discoveries.
What is tragedy? tragedy is the conflict of good.
如果你停下来听一个音乐家或街头艺人表演超过一分钟，你就欠他们一美元。
让这成为一个准则：永远不要给孩子一本你自己不愿意读的书。
Poor is the man whose pleasures depend on the permission of another.
Every word is a step towards understanding, but also towards confusion.
Investors should be wary of anyone who promises guaranteed returns.
The most important skill for an empirical researcher is not math, but judgment.