"每一本书都是一个世界，作者是那个世界的创造者，读者则是那个世界的探索者。"

In all affairs， it's a healthy thing now and then to hang a question mark on the things you have long taken for granted.

Models are not crystal balls, but they are the best tools we have to understand the future.

在这个常常奖励自私的世界里，善良可以是一种革命性的行为。

The most difficult thing is the decision to act, the rest is merely tenacity.