I think [contacting an alien civilization] would be a disaster. The extraterrestrials would probably be far in advance of us. The history of advanced races meeting more primitive people on this planet is not very happy, and they were the… — Stephen Hawking Copy Share Image
![“I think [contacting an alien civilization] would be a disaster. The extraterrestrials would probably be far in advance of us. The history of advanced races meeting more primitive people on this planet is not very happy, and they were the same species. I think we should keep our heads low.” quote by Stephen Hawking](https://sms4smile.com/quotes/img-quotes/585/stephen-hawking-389_aliens_i-think-contacting-an-alien-civilization_1727877.jpg)