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.

The concept of a black hole firewall challenges our understanding of quantum mechanics and general relativity.

我们随身携带着我们的历史，在我们的骨头和血液里。

【释义】审视自己就可以推知他人，考察现在就可以了解过去。

To lose a language is to lose a way of seeing the world.

在研究自然时，想象力必须受到逻辑和实验的严格规则指导。