An arrogant person cannot really know a lot
I also think that an arrogant person is fundamentally flawed in a very bad and profound way and if all such a person can do is to keep criticizing others, then it reveals an insecurity inside them as if they are not really sure of what they are saying at all, but just have to keep hammering away at the words and ideas of others. Thus, as I have always said, arrogance and ignorance always sit close together. An arrogant person cannot really know a lot, as there is so little room in their mind for ideas - they are so full of self-admiration. They are basically very selfish and wish to have all the glory. They are focused solely upon themselves to the complete exclusion of others.