有一回巴菲特在地上看到一毛錢，他彎下腰拾起這枚硬幣，當時所有在場的人都驚訝不已，只見他說
脫碳之路是復(fù)雜的，但不作為的代價要大得多。
Every mathematical problem is a window into a deeper understanding of the world.
Mathematics is not a spectator sport. You have to get involved.