Carl Sagan

"Science is a way of thinking much more than it is a body of knowledge."

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

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

"Extraordinary claims require extraordinary evidence."

"We are star stuff harvesting sunlight."

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

"For small creatures such as we the vastness is bearable only through love."

"It's a lazy Saturday afternoon, there's a couple lying naked in bed reading Encyclopediea Brittannica to each other, and arguing about whether the Andromeda Galaxy is more 'numinous' than the Ressurection. Do they know how to have a good time, or don't they?"

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

"The idea that God is an oversized white male with a flowing beard, who sits in the sky and tallies the fall of every sparrow is ludicrous. But if by 'God,' one means the set of physical laws that govern the universe, then clearly there is such a God. This God is emotionally unsatisfying... it does not make much sense to pray to the law of gravity."

"If it can be destroyed by the truth, it deserves to be destroyed by the truth."

"It's a lazy Saturday afternoon, there's a couple lying naked in bed reading Encyclopediea Brittannica to each other, and arguing about whether the Andromeda Galaxy is more 'numinous' than the Ressurection. Do they know how to have a good time, or don't they?"

"We are star stuff harvesting sunlight."

"Extraordinary claims require extraordinary evidence."

"Science is based on experiment, on a willingness to challenge old dogma, on an openness to see the universe as it really is. Accordingly, science sometimes requires courage - at the very least the courage to question the conventional wisdom."

"La prueba de ausencia no es prueba de ausencia"

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

"We've arranged a civilization in which most crucial elements profoundly depend on science and technology. We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster."

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

"The way to find out about our place in the universe is by examining the universe and by examining ourselves - without preconceptions, with as unbiased a mind as we can muster."