This planet seems to be in such sorry shape. And I can't ever think about the rest of the universe without coming back home and thinking what the implications for life here would be if we were to really have some definitive proof of extraterrestrial life. Ann Druyan
The Federal government does not have any information about extraterrestrial life to conceal, and there are no secret projects for me to investigate. Orrin Hatch
For many centuries, humans have speculated that there might be planetary systems around other stars and that there could be extraterrestrial life there and even intelligent being. However, those were simply speculations, and now we have evidence for the first part of these ideas. George Smoot
Discovering traces of life on Mars would be of tremendous scientific significance: The first time that any signs of extraterrestrial life had ever been detected. Many people would also find it heartening to learn that we're not entirely alone in this vast, cold cosmos. Nick Bostrom
The biggest breakthrough in the next 50 years will be the discovery of extraterrestrial life. Freeman Dyson
The fancy that extraterrestrial life is by definition of a higher order than our own is one that soothes all children, and many writers. Joan Didion