"The great advantage of being a writer is that you can spy on people. You're there, listening to every word, but part of you is observing. Everything is useful to a writer, every scrap, even the longest and most boring of luncheon parties."

The mining industry must evolve to meet the demands of a changing world.

I am happy and proud of what I have done， but not completely satisfied.

我不需要理由去成功。

数学的历史是人类好奇心和创造力的历史。