gnosonarcissism 

This word is a combination of "gnosis" (knowledge) and "narcissism" (self-centeredness). So, gnosonarcissism is a self-centered view that one's level of knowledge is correct and/or complete despite what others know. This implies a lack of understanding that others might know more in areas of knowledge in either a horizontal way (breadth of knowledge) or a vertical way (depth of knowledge).

Because of his gnosonarcissism, he was unable to believe that the ideas of others could ever be better than his own ideas.

gnosonarcissism by Gregory V. Richardson July 9, 2006

gnosonarcissist 

This word is a combination of "gnosis" (knowledge) and "narcissist" (a self-centered person). So, a gnosonarcissist is a person who believes in a self-centered way that his level of knowledge is correct and/or complete despite what others know. This implies a lack of understanding that others might know more in areas of knowledge in either a horizontal way (breadth of knowledge) or a vertical way (depth of knowledge).

Dudley was a gnosonarcissist who believed that his own limited understanding was better than the the knowledge of others who knew much more.

gnosonarcissist by Gregory V. Richardson July 8, 2006