Steve had a brilliant blog on this once -
http://www.stevepavlina.com/blog/200...se-mindedness/. , and yes, there must be acceptance that you will see others as closed minded partly because YOU are also being a bit closed-minded as well...
But the line to use with them is (thanks Wayne Dyer) "You might be right!". It allows everyone to walk away without being offended. I've tried this a few times myself and its great!
Enjoy
Hazel