We can judge our progress by the courage of our questions an... - Carl Sagan

"The nuclear arms race is like two sworn enemies standing waist deep in gasoline, one with three matches, the other with five."

"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?"

"The truth may be puzzling. It may take some work to grapple with. It may be counterintuitive. It may contradict deeply held prejudices. It may not be consonant with what we desperately want to be true. But our preferences do not determine what's true."

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

"We are star stuff harvesting sunlight."