Even at 50 years old, Brad Pitt can still heat up a movie, or a magazine cover for that matter. The star is currently headlining a World War II movie called Fury, and recently graced the cover of British GQ. And even while Brad Pitt and Angelina Jolie and kids are all in Malta filming the celebrity couple's first team-up since 2005's Mr. and Mrs. Smith, the Hollywood heartthrob also found the time to sit down for a cover interview for the UK magazine, Psychologies.

In the interview, the actor reveals what it's like to be the father to the multinational brood that is the Brad Pitt and Angelina Jolie kids. "I feel like the richest man alive since I've become a father. Being a father has changed me on so many levels and made me more generous and alive," the World War Z star shared. "I see my children as an essential part of my life, and it means so much to be able to educate them and help them make their way in the world as they grow up. I love being a father and all the responsibilities that entails. It's the most beautiful thing you can experience."

He also describes the typical concerns that come with parenthood, and the selflessness that comes along as a requirement of the role. "I worry about them all the time. That's the emotional bond and responsibility that sweeps over you when you have a family to look after," Brad says. "I care about them more than I care about myself, which I think is the real definition of love."

And through all this, Brad Pitt says his wife Angelina Jolie is his inspiration and motivation. "Angelina is just amazing. I'll be tired and lie down on the sofa and then she'll keep going until late at night. And that makes me feel like, 'Why am I taking it easy?' so I'll go help out and play with the boys and get them to bed," he shares. "You realize that you always have the energy inside you, and as a parent you need to have a lot of willpower."