Carl Sagan — "The cure for a fallacious argument is a better argument, not the suppression of …"

"The truth may be puzzling. It may take some effort to grasp. It may be counterintuitive. It may contradict deeply held prejudices. It may not be easy to do what the truth demands. But none of that mak…"

"The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pie were made in the interiors of collapsing stars. We are made of starstuff."

"The cosmos is all that is or ever was or ever will be. Our feeblest contemplations of the Cosmos stir up a tingling sensation, a slight challenge for the nerves, a faint foreboding, as if we were appr…"

"The Earth is like a tiny, fragile spaceship, and we are its crew."

"A book is made of paper, ink, and a little imagination."