这样确切的爱，一生只有一次。

Every mathematical problem is a window into a new world of understanding.

"I am drawn to the lyric, the short poem, where every word has to be exact."

数学中最重要的技能是提出正确问题的能力。

No rain， no rainbow.

I am always glad to think that my education was, for the most part, informal, and had its roots in the soil.

我不认为我是一个很好的说谎者，我认为我是一个非常糟糕的说谎者。

对舒缓的事情，要急速解决，因为思想敏锐，往往获得成功；对急迫的事情，应沉稳处理，因为急躁忙乱，常常漏洞百出。

The true value of coal lies in how we extract and use it responsibly.

We thought that we had the answers, it was the questions we had wrong.