有用是这些老人曾经对自己最好的希望，而无目的是他们最深的恐惧。
"To be useful was the best thing the old men ever hoped for themselves, and to be aimless was their worst fear."
杰夫·贝索斯接受了莱克斯·弗里德曼的播客采访
我们回收和循环利用的每一块塑料都是迈向更清洁地球的一步。
"The beauty of computational complexity lies in its ability to reveal the inherent difficulty of problems, regardless of the specific algorithms used to solve them."
To wear your heart on your sleeve isn't a very good plan; you should wear it inside, where it functions best.
