Brad Pitt says fatherhood has made him more "passionate" about life.

The actor - who raises six children, Maddox, 10, Pax, seven, Zahara, six, Shiloh, five, and three-year-old twins Knox and Vivienne, with partner Angelina Jolie - wants to create films that will have a lasting impact on his kids since becoming a dad, because movies played such a big part of his life when he was younger.

He said: "I am more passionate now that I am a father. It has focused my mind on the kind of work I want to do.

"I think of how movies affected me when I was younger, and how they've stayed with me ever since.

"Now I want to make films the kids can see and that might stay with them. I want to make films they can be proud of."

The 47-year-old star admits his "shelf life" as an actor is coming to an end, but he still wants to play a "grumpy old dude" in a movie one day.

He added to Culture magazine: "I'm bothered less about whether the films I shoot make money. I just want them to have longevity.

"We all have a shelf life, and mine is coming - although there are a couple of things I'd still like to do. I am looking forward to playing a foul-mouthed grumpy old dude one day, that's for sure."