你必须先有爱，然后才能变得无情。

煤炭的未来在于平衡环境责任与能源需求。

The march of science and technology does not imply growing intellectual complexity in the lives of most people. It often means the opposite.

我相信，整个世界被这种新奇而神奇的媒介（电报）启蒙的时代已不遥远。