An acquaintance of mine lives near them in Connecticut. She said that it's well known that if you run into them in town you are not to ask them any questions. She said they're not difficult people - just private.
I have a tendency to believe her (on this) because I remember a story about Paul Newman and the Indy 500...he was more than cordial to people talking about subjects other than acting/showbusiness/famous people. Racing cars? He'd talk all day. He just wasn't into the "star treatment'.
Sounds like a grounded guy to me. I hope that he's in good health.