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