In my experience, it is next to impossible to reason with such a person, for facts are not the issue.Those words struck a chord within me. They are true for so many people in so many dimensions in life.
Facts are not the point.
Have you ever experienced frustration when you've tried to reason with another? You carefully lay out your case, only for it to be shot down with counter points. However, have you ever had the feeling that no matter if you counter his counter points until his can't think of other points to counter with, he still won't concede anything? So often in life, facts are not the point. It is about feelings or desires or prejudices or biases. Not facts. Get used to it. It happens all the time.