More quotes by Carl Sagan

"The nuclear arms race is like two sworn enemies standing waist deep in gasoline, one with three matches, the other with five."
"A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism."
"Science is a way of thinking much more than it is a body of knowledge."
"Somewhere, something incredible is waiting to be known."
"There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths."