Dave is strong. Dave is high. Alan is thin. Alan is little. Fiona is wealthy. Harry is dull. Harry is rough. If someone is not big then they are dull. If someone is not poor then they are smart. If someone is wealthy then they are kind. If someone is kind and not sad then they are nice. If someone is dull and not big then they are bad. If someone is thin and little then they are sad. If someone is sad and not kind then they are rough. All smart people are quiet. 
Harry is not quiet.