Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people.
Carl SaganThere is a lurking fear that some things are not โmeant" to be known, that some inquiries are too dangerous for human beings to make.
Carl SaganAny sufficiently crisp question can be answered by a single binary digit-0 or 1, yes or no.
Carl SaganAfter I give lectures-on almost any subject-I am often asked, "Do you believe in UFOs?" I'm always struck by how the question is phrased, the suggestion that this is a matter of belief and not evidence. I'm almost never asked, "How good is the evidence that UFOs are alien spaceships?"
Carl Sagan