研究量子引力对于理解早期宇宙至关重要。
The study of quantum gravity is essential for understanding the early universe.
A world without books is a world without light.
Medicine is my lawful wife, and literature is my mistress.
A shortage is a sign that somebody is keeping the price artificially lower than it would be if supply and demand were allowed to operate freely.
没人会和你自己一样对你所拥有的东西印象深刻。（Morgan Housel《金钱心理学》里面的一句话，可以理解为禀赋效应：即，由于情感上的偏见，人们在自己已经拥有的东西上比尚未获得的东西拥有更大的价值）