过去从未消逝，它甚至还未成为过去。
The past is never dead. It's not even past.
As to the gods, I do not know whether they exist or not, nor what they are like in form; for there are many things that hinder sure knowledge, the obscurity of the matter and the shortness of human life.
夢は、諦めなければ、必ず叶う。
The real challenge is not just building climate models, but interpreting what they tell us.
预测未来的最好方法就是创造未来。