一切事物因缘而生，一切事物因缘而灭。

自然实验是理解现实世界中因果关系的强大工具。

"The most effective way to destroy people is to deny and obliterate their own understanding of their history."

The ability to read and interpret the genetic code has revolutionized our approach to medicine and genetics.

做好事如同背负重物而登山，志向虽已确立，但总是担心力不从心；干坏事如同骑马下山，虽然未加鞭，但却欲驻足而难以自禁。

"黑暗永远存在，只需要学会直视它。"