One glance at a book and you hear the voice of another perso... - Carl Sagan

"I don't want to believe. I want to know."

"You can get into a habit of thought in which you enjoy making fun of all those other people who don't see things as clearly as you do. We have to guard carefully against it."

"You could just as well say that an agnostic is a deeply religious person with at least a rudimentary knowledge of human fallibility."

"Extraordinary claims require extraordinary evidence."

"Somewhere, something incredible is waiting to be known."