"It's important to write about difficult subjects in a way that children can understand."

"我不是一个人，我是一个声音。"

"We do not write to be understood; we write in order to understand."

Every new planet we find is a step closer to answering the age-old question: Are we alone in the universe?

The true measure of an economy’s success is how well it serves all its citizens.

I ask senior leaders to not do anything unless they're willing to do it for 10 years.