Stephen Moore, a visiting fellow at the Heritage Foundation who was formerly the conservative organization’s chief economist, told radio host Janet Mefferd last week that the “dingbat” idea of climate change is “one of the greatest propaganda campaigns in world history.”

He told Mefferd:

… I have to tip my hat to the left, this has been one of the greatest propaganda campaigns in world history that the left has pulled off. I mean, they’ve taken this dingbat idea of global climate change and they’ve put it in the schools, they’ve put it in the movies, they’ve put it in the media and the churches — you know, I’m Catholic, even the pope talks about climate change. So it’s very alarming how this propaganda campaign, that they made this stuff out of, almost completely out of thin air and they’ve convinced millions and millions of thought leaders that this stuff is real.

Moore added that the idea of climate change is “very Stalinistic” and is “a religion,” adding, “They’d put me in jail if they could.”

Moore, unsurprisingly, is advising Donald Trump, who thinks climate change is a hoax “created by and for the Chinese,” on economic policy.