Extraordinary claims require extraordinary evidence. - Carl Sagan

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

"The cosmos is within us. We are made of star-stuff. We are a way for the universe to know itself."

"We are all star stuff."

"A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism."

"One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time."