Religion exists, in part, precisely because humans aren’t at home amid these cruel rhythms. We stand half inside the natural world and half outside it. We’re beasts with self-consciousness, predators with ethics, mortal creatures who yearn for immortality.

This is an agonized position, and if there’s no escape upward — or no God to take on flesh and come among us, as the Christmas story has it — a deeply tragic one.

Pantheism offers a different sort of solution: a downward exit, an abandonment of our tragic self-consciousness, a re-merger with the natural world our ancestors half-escaped millennia ago.

But except as dust and ashes, Nature cannot take us back.

So despite its genuinely impressive technical innovations, Avatar isn't much a movie: Instead, Cameron's cooked up a derivative, overlong pastiche of anti-corporate clichés and quasi-mystical eco-nonsense. It's not that the film's politics make it bad, it's that even if you agree, the nearly three-hour onslaught of simplistic moralizing leaves no room for interesting twists or ambiguity in the story or characters: corporations are bad, scientists are good, natives are pure, harmony with nature is the ultimate ideal — the only suspense comes from wondering what movie Cameron will rip off next. The go-to comparison so far is Dances With Wolves meets Ferngully, and that's just about right. But Cameron rips himself off considerably as well: There are gruff marines are straight out of Aliens, stubborn science-types pulled from The Abyss, and a love-across-the-boundaries romance that echoes Titanic — only this time, it's across species rather than ship decks.