Idiom of the day :- Narrow-minded

Usage, examples and definition of the Idiom :-

‘There’s nothing wrong with you that can’t be cured,’ Dr Grouse said. ‘Just be more tolerant, stop being so critical, show more concern for others, and open your mind to new ideas. ‘ Willies looked shocked. ‘Are you telling me I’m narrow-minded ? That’s the most ridiculous thing I’ve ever heard !’ Willies shouted — thus proving his narrow-mindedness.