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.

我非常相信用清单来解决难题。你需要在你面前得到所有可能和不可能的答案；否则很容易错过一些重要的东西。