Sometimes people hold a core

"Sometimes people hold a core belief that is very strong. When they are presented with evidence that works against that belief, the new evidence cannot be accepted. It would create a feeling that is extremely uncomfortable, its called cognitive dissonance. And because it is so important to protect the core belief, they will rationalize, ignore and even deny anything that doesn't fit to that core belief" Frantz Fanon.        

Here's added advice from me;  When you meet people like this RUN FROM THEM. Don't walk. RUN FROM THEM. They are bad for your soul and will keep from becoming all the good and wonderful things you can be.