我对某个人一旦没有了好感，就永远没有好感。

数学不是沿着一条清理得很好的高速公路小心行进，而是一次进入陌生荒野的旅程，探险者常常会迷路。

We are not selling water, we are selling health and quality of life.

I cannot fix on the hour, or the spot, or the look, or the words, which laid the foundation. It is too long ago. I was in the middle before I knew that I had begun.

The most important thing is to tell a story that you care about.

在科学领域，我们必须准备好接受我们最珍视的理论有一天可能会被取代。