Carl Sagan Quotes about Survival
If we do not speak for Earth, who will? If we are not committed to our own survival, who will be?
Carl Sagan (2011). “Cosmos”, p.349, Ballantine Books
Carl Sagan, Jerald F. TerHorst, Allan J. Mayer, Sharon S. McKern, Laurence J. Peter (1980). “Broca's brain: reflections on the romance of science”
Carl Sagan (1994). “Pale Blue Dot: A Vision of the Human Future in Space”, Random House Incorporated
"Cosmos: A Personal Voyage". Book by Carl Sagan, 1980.