"To be a spy is to live in a world of constant doubt and suspicion."

忠于你的心，它知道方向。

You wanna fly, you got to give up the shit that weighs you down.

The best way to predict the future is to create it.

"The past is a country we can never return to, but whose borders we are always crossing."

解释：人有知识，犹如树木有枝叶，树木有了枝叶，能带给人阴凉，人有了知识，就可以为人民做更多的事。