"Some people think the word dates back to the time when all humanity existed on but a single world."

Maybe now we can share it as a single world.

They state that all men originated on one single world.

Not just Earth, but every single world in the galaxy.

We grew from a single world not unlike your own, although, obviously, evolution took a different path.

Before, the things in these files could touch the fate of Earth only, a single world.

"The Mediterranean was for many centuries a single world," he said.

I have responsibilities to something far greater than the welfare of a single world.

You can't have billions of people on a single world without its being so.

I've been out in the single world since becoming a widower 12 years ago.