About Carl Sagan
1934 – 1996
American astronomer and science communicator, author and presenter of "Cosmos".
See all 25 Carl Sagan quotes →More from Carl Sagan
“We make our world significant by the courage of our questions and by the depth of our answers.”
“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.”
Related quotes
“The wisest man may be wiser to-day than he was yesterday, and to-morrow than he is to-day.”
“Give thyself time to learn something new and good, and cease to be whirled around.”
“For the things we have to learn before we can do, we learn by doing.”
“It was subtle of God to learn Greek when he wished to become an author—and not to learn it better.”