人类凭借五种感官探索周围的宇宙，并将这一冒险称为科学。

我一直希望我的电脑能像我的电话一样易于使用；我的愿望实现了，因为我已经无法弄清楚如何使用我的电话了。

There is only one good, which is knowledge, and one evil, which is ignorance.

Natural experiments can provide valuable insights into economic questions.

Cowards die many times before their deaths

The worst blindness is the blindness of those who do not want to see.

意识是生活战斗的竞技场。

I have always considered that the true test of a machine is its practical utility in the hands of the common laborer.