Actor Jake Gyllenhaal appeared on The Late Show With Stephen Colbert January 16 to talk about his upcoming role as Mysterio in Spiderman: Far From Home on the big screen and his fast-approaching Off-Broadway turn in Sea Wall/A Life at the Public Theater, which begins performances February 1.

“It’s two monologues. I do one, and the wonderful Tom Sturridge—he does one,” he explained. “They’re two monologue about two men— fathers—and their experience of being fathers and sons and their experiences in life. It asks all the big questions.”

In the New York premiere, Gyllenhaal’s monologue is written by Nick Payne, whose play Constellations brought Gyllenhaal to Broadway for the first time in 2015. Sturridge’s monologue comes from Simon Stephens, the Tony-winning playwright behind The Curious Incident of the Dog in the Night-Time. Carrie Cracknell directs the evening.

“I ran into Carey Mulligan. I told her I was doing a monologue, and she said, ‘Why?’ She said, ‘Don’t do it. Don’t do it. Can you get out of it?’ And then I happened to run into Billy Crudup and I said, ‘Hey I’m doing a monologue,’ and he said, ‘Don’t do that. Why are you doing that?’” Both Mulligan and Crudup performed in solo shows Off-Broadway last year—Mulligan in Girls & Boys, Crudup in Harry Clarke—and, though they spoke of the experience as rewarding, they were also vocal about the challenges.

Gyllenhaal last appeared on Broadway in Sunday in the Park With George; Tom Sturridge last appeared on Broadway in 1984.