Angels with a flaming sword were set as sentries at the gates of Paradise to bar our return. The gardeners became exiles and wanderers.
We find ourselves on the threshold of a vast and awesome Universe that utterly dwarfs—in time, in space, and in potential—the tidy anthropocentric proscenium of our ancestors.
We gaze across billions of light-years of space to view the Universe shortly after the Big Bang, and plumb the fine structure of matter.
We peer down into the core of our planet, and the blazing interior of our star.
We communicate at the speed of light, and whip around the Earth in an hour and a half. We have sent dozens of ships to more than seventy worlds, and four spacecraft to the stars.
Carl Sagan 1934 – 1996