Angelina Jolie and Brad Pitt are planning to retire from the movie industry in a few years to dedicate their time to raising their children. The Hollywood superstars have four children, three of whom are adopted, Cambodia-born Maddox, Vietnam-born Pax and Ethiopia-born Zahara, and biological daughter Shiloh - and plan on having more.Jolie says, "I think both of us only plan to work for a few more years. "Brad and I have a lot of kids. And we want to have more kids, and they demand a lot of time. "You can't balance everything."The pair met during the filming of Mr and Mrs and Jolie was accused of being the "other woman" in the divorce between Brad Pitt adn his then wife Friends star Jennifer Aniston, but the couple have always insisted that they never had an affair.Pitt went on to adopt both of Jolie's children Maddox and Zahara before having a biological child of their own. In reports out this week The Tomb Raider actress admitted that their dedication to their children left the couple very little time with each other. Despite this it has been suggested that the pair may adopt again after Jolie made regular visits to an orphanage whilst filming in Prague.However the eccentrix actress does not want to be remembered for her movie career, she wants to be known for her humanitarian work. The Oscar winner is a UN Goodwill Ambassador and has visited camps in Africa, Pakistan and Cambodia as part of her work.