He either believed all religions or none of them. He did not believe in a future life. A fairer estimate of Burton's religion might be that he was an Agnostic.
Read about Vatican recognition of Christ-Killers, the persecution of anatomist Andreas Vesalius, J.G. Frazer’s exposure of Christianity’s sources, Isaac Asimov, Roman statesman M.T. Cicero, the not-so-secret Fabian Society, the cleric drowned for promoting baptism, and more!