translation.en: So, I don't know how much civilization really has progressed since AD 79, but there's a great likelihood. I really believe this, and I don't believe in aliens, and I don't believe there are any aliens on the Earth or anything like that. But there's a likelihood that we will confront a civilization that is more intelligent than our own.
translation.zh: 所以我并不清楚自从公元79年之后我们的文明究竟进步了多少， 但有可能——我非常相信这点， 并且我虽然不相信外星人——我也不相信现在地球上有外星人 亦或任何类似于外星人的生物。但非常有可能的是，我们将来会面对一支 比我们文明更发达的种族。