煤炭仍将是能源结构的一部分，但它必须更清洁、更负责任。

"Writing is a form of therapy; sometimes I wonder how all those who do not write, compose, or paint can manage to escape the madness, melancholia, the panic and fear which is inherent in a human situation."

Lights will guide you home.

Government, even in its best state, is but a necessary evil; in its worst state, an intolerable one.

写程序要像写一封信一样小心。