Carl Sagan Quotes
On the day that we do discover that we are not alone, our society may begin to evolve and transform in some incredible and wondrous new ways.
Sagan, Carl. The Cosmic Connection: An Extraterrestrial Perspective. Anchor Press, 1973.
Carl Edward Sagan was an American astronomer, planetary scientist, cosmologist, astrophysicist, astrobiologist, author, and science communicator. His best known scientific contribution is research on extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. Sagan assembled the first physical messages sent into space: the Pioneer plaque and the Voyager Golden Record, universal messages intended to be understood by any extraterrestrial intelligence that might find them.