The act or habit of making statements based on pride, self-importance, conceit, or the assumption of
intellectual superiority and the presumption of
knowledge that is not in
evidence or supported by any facts or experience.
"The War in Iraq is similar to the War in Vietnam" stated by Howard Dean is based on Dr. Dean's arrogance and self-importance, and not based on any understanding of current events or direct knowledge of the situation in Iraq.
Senator Kennedy repeating "
Lie after
Lie after
Lie..." is evidence of his arrogance that seems to derive from little more than his
family name, and not from his knowledge of the subject matter, or his understanding of events.
Contrast this to ignorance -- for example, claiming that
Islam is a Peaceful Religion when in
fact the religion is only peaceful to others who submit to it (the meaning of "
Islam") and even then it is not peaceful to other "believers" who belong to different Islamic sects. This is not an example of arrogance as much as an example of ignorance, but the act of making such claims is similar to arrogance.