Asked if he worries about being an older dad, he told The Times magazine: "I take them to karate class and they have swimming lessons at our house, and I drop them off at school. I see dads who are younger. I'm feeling good. I can do everything. But it's not that it doesn't occur to me. I would not want to say goodbye to them prematurely."
"There would be an extra reason to be disappointed to check out earlier than I hoped," he added, reports female first.co.uk.
The 67-year-old actor, who has Charlie, four, and River, two, with his wife Emilie Livingston, previously revealed he is "glad" he waited until later in life to have kids.
He said: "I am glad I didn't have kids until now really. I don't know that I was equipped and I was busy and probably more self involved than I'm possibly capable of now, we'll see. I do enjoy my kids now ...
"After a couple of years during a sweet, sweet moment, she said, 'Jeez, this is going so well, what if we had a baby?' and I had flirted with the idea before and was glad that I hadn't and had confirmed to myself that I wasn't going to but because she said it, and because of what was going on between her and I, I thought, this is a serious and interesting proposition.
"And it wasn't until a year later when we went to my therapist and excavated and brought to the surface all of my considerations that I became clear and wildly enthusiastic about it."
( With inputs from IANS )