Originally Posted by DAISHI
You might want to try a title less intimately associated with Carl Sagan.
It's not really intimately associated with him, as he's not automatically the first thing that everybody thinks of when you hear it. I first think of it as the inscription on the plaque honoring the astronauts who died in the Apollo 1 mission. There's a lot of other uses for the phrase. It has been in use since at least 1903