To av mine favorittsitater angående UFO'er:

I am discounting reports of UFOs. Why would they appear only to cranks and weirdos?
- Stephen Hawkins

Maybe you did see visitors from another part of the galaxy. I need more than your eyewitness testimony, though. And in modern times, I need more than a photograph. Today Photoshop software probably has a UFO button. I'm not saying we haven't been visited; I'm saying the evidence brought forth thus far does not satisfy the standards of evidence that any scientist would require for any other claim.
- Neil deGrasse Tyson