Addressing the future of religion, Krauss cited gay marriage and slavery in offering up a dire prediction: that religion could be largely eradicated within just one generation’s time.

“People say, ‘Well, religion has been around since the dawn of man. You’ll never change that’ … This issue of gay marriage, it is going to go away, because if you’re a a child, a 13-year-old, they can’t understand what the issue is. It’s gone,” he said. “One generation is all it takes.”

Like same-sex matrimony, Krauss said that slavery, too, was ended in a generation, adding his belief that the same dynamic applies to religious adherence.

“Change is always one generation away,” the scientist said. “So if we can plant the seeds of doubt in our children, religion will go away in a generation, or at least largely go away — and that’s what I think we have an obligation to do.”