The interview was conducted on September 26, the 27th anniversary of Scalia's swearing-in as a justice on the high court. He is one of a record six Catholic justices on the Supreme Court.
After Scalia and Senior discussed heaven and hell (he believes in them; she doesn't), the justice said in a stage whisper, "I even believe in the devil."
"You do?" Senior replied.
"Of course! Yeah, he’s a real person. Hey, come on, that’s standard Catholic doctrine! Every Catholic believes that," Scalia said.
Senior asked Scalia if he's seen evidence of Satan's work recently.
"You know, it is curious," Scalia answered. "In the Gospels, the devil is doing all sorts of things. He’s making pigs run off cliffs, he’s possessing people and whatnot. And that doesn’t happen very much anymore. ... It’s because he’s smart."
Scalia said the Devil has gotten "wilier" and convinced people that he and God don't exist. The justice added that he doesn't think that atheists are Satan's minions, but that disbelief in God "certainly favors the devil's desires."
Senior asked if it's "frightening" to believe in the devil, which seemed to annoy Scalia.