He was hardly more than five feet four inches but carried himself with great dignity. His head was exactly the shape of an egg, and he always perched it a little on one side. His mustache was very stiff and military.
Yet, the self-confidence of Hercule Poirot sometimes turns into arrogance and conceit. Poirot shows this by saying of himself, “I am not a middle man. I am a top man” or “I am a detective” in such a manner as if he was talking about a person from an upper social class (Death on the Nile 141).