作家必须甘于被挑战。

People are curious. A few people are. They will be driven to find things out, even trivial things. They will put things together, knowing all along that they may be mistaken.

Coal is China's main energy source and will remain the cornerstone of China's energy security for a long time to come.

尿素合成是一个幸运的发现，但它开辟了一个新的研究领域。

The greatest thing in the world is to know how to belong to oneself.

"You can't go back and change the beginning, but you can start where you are and change the ending."

译文：一句话不对就容易把天惹塌，话没有经过多次思考就不要说出口。赏析：在说出每一句话前，我们都要深思熟虑后才能出口，否则就会中伤别人。