乐观的基础是纯粹的恐惧。
Mathematics is the organ with which we comprehend the phenomena of nature.
追求数学知识是一场永无止境的冒险。
Every time a coal plant closes, a piece of America's heart closes with it.
"The power of a story lies not in its plot, but in its ability to resonate with the reader's own experiences."
过去是一个异国;他们在那里的做法不同。