The 66-year-old star became a dad for the eighth time when his wife Penny Lancaster gave birth to son Aiden last month.
Asked how Penny is coping, he told the UK's Hello! magazine: 'I'll never quite understand how mothers manage to do it. She hasn't had much sleep since little Aiden was born.
'She had two half-hour naps in the middle of the night last night. They just wake up and they want feeding and comforting. But it is amazing, because I hold him and he shouts.
'So I said to Penny, 'Why is he peaceful when you hold him?' She said, 'Well, he can smell the food and he knows my voice and the touch of my skin.' So I take my hat off to mothers, and especially my Penny.'