煤炭的未来取决于我们能否使其更清洁、更高效。

"Escribir es un acto de amor, de entrega total a las palabras que nos habitan y nos definen."

"Be so good they can't ignore you."

He who knows only his side of the case knows little of that.

数学的研究是所有智力和精神进步不可或缺的基础。