He aquí un caballo pálido

Cooper's work covers everything from government secrets to occult beliefs. I'm curious what motivated him to bring all these ideas together in this way.

The book blurs the line between fact and speculation, which made me question what to believe. How did others feel about the credibility of the claims presented?

Given the controversial nature of the content, I'm wondering how much was supported by evidence and how much was Cooper's own interpretation.