It's sometimes easier to reject strong evidence than to admit that we've been wrong, this is information about ourselves worth having.
Carl SaganI don't know the answer. Maybe no one knows. Maybe when you grow up, you'll be the first to find out.
Carl SaganVirtually every major technological advance in the history of the human species - back to the invention of stone tools and the domestication of fire - has been ethically ambiguous.
Carl SaganWe on Earth have just awakened to the great oceans of space and time from which we have emerged.
Carl SaganIt is sometimes said that scientists are unromantic, that their passion to figure out robs the world of beauty and mystery. But is it not stirring to understand how the world actually works — that white light is made of colors, that color is the way we perceive the wavelengths of light, that transparent air reflects light, that in so doing it discriminates among the waves, and that the sky is blue for the same reason that the sunset is red? It does no harm to the romance of the sunset to know a little bit about it.
Carl Sagan