I believe that would be best... specially before he becomes complacent to leave.

It is, of sorts. Not so much for Demons but for Humans. Considering how the Earth I visited was rich in technology that made life easier for Humans... it is ideal because technology can be used by anyone, where Magic can't. Though, not everyone can adapt very well. It's a big culture shock to most.

[He reads that a few times]

It sounds intriguing.