行义事不能进行时，不要责怪道义。 

Power is not a means; it is an end. One does not establish a dictatorship in order to safeguard a revolution; one makes the revolution in order to establish the dictatorship.

We are not interested in the spectacular. We are interested in the specific.

"I’m not perfect. I make mistakes like everyone else."

人类的一代代后代，将取得令我们惊讶的成就，然而如果我们有想象力，未来的他们将会创造的一部分东西，已经可以用今天现有的材料和工具来制造。展开畅想吧。