A Memory of Portals

In the days before time and place, no one knew when or where they were. Without knowing when or where they were, they could not know when or where they were going.

Then came those who shall not be named, who brought with them knowledge of when and where.

With that knowledge, the most powerful tool in the history of the universe was created by the ones among us with the resolve to step through the swirling vortex.

But wherewhenorwho are we, you might ask. And how did we come to know what we've told you? We'll save answers for Wikipedia and merely offer this to you.