Those are unexpectedly kind words from someone who just learned what Jon has chosen to become, and the Archivist smiles in return before looking down at his own hands, shifting them around with uncertainly, fingers wiggling.

He knows that if he were to try to sign anything now, it would be nonsense.

"I... I'm afraid I can't communicate that way at the moment. This kind of knowledge... It is granted to me by the Eye." And he has no connection to his patron while they are in these tunnels. "I will be able to sign again once we are released."

He looks back up from his hands and back at Lerith, shrugging once. "The Eye and that which it is part of had plenty to feast back on my Earth. And if I am to guess... It enjoys us all being stuck here as well."