The true cost of coal must account for both its immediate value and its long-term impact on communities and ecosystems.
最好的建筑是鼓舞人心的。
2001:贝索斯致股东信《我们始终坚持现金流为王》
生命最大的用途是将它用于比生命更长久的事物上。
数学直觉就像肌肉一样 - 通过锻炼会变得更强大。
The most important thing in mathematics is to ask the right questions.