I'm reading this extraordinary book of dialogues between Mailer and his friend the scholar Michael Lennon, recorded in late 2006. They confirm and elaborate upon those spiritual convictions of Mailer's that have always erupted out of individual novels in the past, but which were abundantly present on every page of what turned out to be the last work, The Castle in the Forest. It's all quotable stuff, but this is a particular speculation that I was mentally underlining within moments of first meeting it:
"All right - we are going to be reincarnated. Whether we know what our reincarnation will be, I doubt. I expect it will be full of surprises, most unforeseen. Some, given our vanity, are likely to seem outrageously warped."