A promise is a promise.

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.

思想和背景的多样性会带来更好的决策和更具创造性的解决方案。

生存还是毁灭，这是一个问题。

数学不仅仅是数字和方程；它是关于理解宇宙中的深层模式和联系。