写作是一种存在于世界的方式，一种理解它的方式。

The joy of mathematics comes from the moments of clarity when complex things become simple.

Innovation and technology will be key to meeting the world's growing energy needs while reducing environmental impacts.

I will hazard a prediction. When you are 80 years old， and in a quiet moment of reflection narrating for only yourself the most personal version of your life story， the telling that will be most compact and meaningful will be the series of choices you have made. In the end， we are our choices. Build yourself a great story.