"It never really occurred to me to believe in God - and I had nothing to rebel against, my parents told me nothing whatsoever.
"But I do remember looking at my headmaster delivering a sermon, a classicist, extremely clever... and thinking, he can't really believe all that, can he? How incredible!"
It seems Attenborough has been receiving hate mail ever since the airing of his new special.
"They tell me to burn in hell and good riddance," Sir David said during an interview with the Radio Times...Telling the magazine that he was also asked why he did not give "credit" to the Lord, Sir David continued: "They always mean beautiful things like hummingbirds.
"I always reply by saying that I think of a little child in East Africa with a worm burrowing through his eyeball.
"The worm cannot live in any other way, except by burrowing through eyeballs.
"I find that hard to reconcile with the notion of a divine and benevolent creator."