Former CIA officer Jim Semivan said in a podcast published Monday that we are sharing the planet with alien life.

“There’s some kind of non-human intelligence that’s living with us on this planet!” Semivan proclaimed on the Calling All Beings podcast. Apparently we’re not alone, and “we’ve never been alone,” according to Semivan.

And while this might be true, Semivan didn’t seem to offer up any physical evidence for his claims.

“I think they mention that the phenomenon is a natural part of our universe, and we’re living in it but we don’t recognize it,” he explained of the aliens we share our home with. “The same way that insects and animals don’t recognize the human universe. A cat and a dog could be running through a library, but they don’t have the faintest idea what the books are all about and what libraries are all about.”

Considering we still don’t know what dark matter is, or if it even exists, Semivan’s claim could well be true. Though his argument also suggests that these beings could be ghosts.