The power of abstraction allows us to see the common threads that run through seemingly disparate problems.

"The past is always with us, for it feeds the present."

The city is a mirror of society.

世界上主要有两类人。第一类人有所成就，第二类人号称自己有所成就。第一类人不如第二类人那么多。

如果你自由，你就不可预测。