Would we argue that ten thousand target nuclear warheads are likely to enhance the prospect for our survival? What account would we give of our stewardship of the planet Earth? We have heard the rationales offered by the nuclear superpowers. We know who speaks for the nations. But who speaks for the human species? Who speaks for Earth?
-Carl Sagan
Select a background
More quotes by Carl Sagan
Popular Authors
A curated listing of popular authors.