“We make our world significant by the courage of our questions and by the depth of our answers.”

— Carl Sagan, Cosmos (1980)

About Carl Sagan

1934 – 1996

American astronomer and science communicator, author and presenter of "Cosmos".

“Books are key to understanding the world and participating in a democratic society.”

“Imagination will often carry us to worlds that never were. But without it we go nowhere.”

“The Cosmos is all that is or ever was or ever will be.”

Attribution note: Source disputed or unverified.

“A person who never made a mistake never tried anything new.”

“The important thing is not to stop questioning. Curiosity has its own reason for existing.”

“Make good art.”

“Vulnerability is the birthplace of love, belonging, joy, courage, empathy, and creativity.”

“Have courage to use your own understanding!”

“Strive, and hold cheap the strain; / Learn, nor account the pang; dare, never grudge the throe!”