"Courage is not the absence of fear, but the triumph over it."

地理学是研究地球作为人类家园的科学。

Talent is how quickly your skills improve when you invest effort. Effort is what makes skill productive.

Innovation is not from 0 to 1, but from 1 to 100. Continuous iteration is the key.

数学发现的过程与发现本身同样重要。