儿童对活动的需要几乎比食物的需要更为强烈。

I keep thinking about this river somewhere, with the water moving really fast. And these two people in the water, trying to hold onto each other, holding on as hard as they can, but in the end it’s just too much. The current’s too strong. They’ve got to let go, drift apart.

"A book is a version of the world. If you do not like it, ignore it; or offer your own version in return."

A business that makes nothing but money is a poor business.

You have to see failure as the beginning and the middle, but never entertain it as the end.

研究量子引力对于理解早期宇宙至关重要。

The beauty of computational complexity lies in its ability to classify problems based on their inherent difficulty.