This is apparently what he claims. But if he is as smart as everyone says he is, how could he possibly believe nothing exploded and made everything? I personally think he's a Christian who claimed to be an atheist to sell books.
I'd love to hear your thoughts, thanks.
Lots of people who display high level of intelligence also don't believe in a god or gods so I can't see why he couldn't be another. Have you anything (bar speculation) that indicates his claim to be an atheist not the truth?