close (or shut) one's mind to (or against)
Refuse to consider or acknowledge: she closed her mind against his disapproval...- I don't think you should ever close your mind to what people can offer.
- What this means is that he has chosen to ignore or shut his mind to information which should have led him to believe (not merely suspect) that the allegation is false.
- I shut my mind to the terrible sights all around me.
See parent entry: mind