Harry is huge. Harry is big. Alan is small. Alan is short. Bob is wealthy. Dave is rough. Dave is sad. If someone is not strong then they are rough. If someone is not bad then they are smart. If someone is wealthy then they are quiet. If someone is quiet and not poor then they are nice. If someone is rough and not strong then they are dull. If someone is small and short then they are poor. If someone is poor and not quiet then they are sad. All smart people are kind. 
Harry is not dull.