The actor, who fathers girlfriend Calista Flockhart's seven-year-old son, Liam, was quoted by the UK's Sun as saying: "I dont pretend to be anything I am not age-wise, but Liam keeps me feeling connected to this growing and maturing process which is so much fun. And these particular years are so spectacular. Kids absorb and learn at a rate that never happens again in your life. It's brilliant to be part of it and watch it."
The actor added: "It's brilliant all the way through. I have five kids aged 41, 38, 20, 17 and seven. Sometimes with the oldest ones I feel like I have children of my own age."