The 51-year-old actor opened up about the 40-year-old actress and their six children in a recent interview with The Telegraph. Pitt told the publication he always wanted a large family, and joked he and Jolie were initially "aiming for a dozen" kids.
"Everyone talks about the joy of having kids ... but I never knew how much I could love something until I looked in the faces of my children," the star said. "[There's] a lot of love, a lot of fighting, a lot of refereeing, a lot of teeth-brushing and spilling... Chaos, total chaos. But so much fun."
Pitt and Jolie are parents to 14-year-old son Maddox, 11-year-old Pax, 10-year-old daughter Zahara, 9-year-old son Shiloh and 7-year-old twin son and daughter Knox and Vivienne. The actor also shared his love for Jolie, saying he's "surprised" at how much their history means.
"That have this story together," he elaborated. "That we know each other. That we watch each other getting older, through amazing moments, joys, pains ... It means so much to me. I don't know. I'm just surprised, because you hear people talking about the old ball and chain, and people trying to recapture youth, as if that's the impulse -- but it's not the impulse, it's not the impulse at all."
Pitt and Jolie have been together since 2005, and married in August 2014. The couple's latest film, By the Sea, opened in theaters Nov. 13 to mixed reviews, and the pair previously told Entertainment Tonight they worked with son Maddox on the movie.
"We want to make it a family affair and have the kids running in and out of set," the actor said. "It's fun to see your boy grow up and take responsibility and [it's] very nice."
"Mad and I are now producing a film in Cambodia about his country and his history, so we love working together," Jolie added of First They Killed My Father. "It makes it so much nicer for me to not have to divide my time at home with my time at work."
Pitt will next appear in The Big Short with Christian Bale and Steve Carell, and is also slated for War Machine with Will Poulter. Jolie will direct and produce First They Killed My Father, and is rumored to star in Salt 2 and Maleficent 2.