宇宙的初始条件是一个深刻的谜，膨胀为宇宙为何看起来如此提供了一个可能的解释。

I don't like to do easy things. I like to do things that are challenging and that push me.

The key to innovation in economics is to question conventional wisdom.

If something fails where you thought it would fail， that is not a failure.

Sustainability isn't a cost—it's an investment in our future.