Bob is high. Bob is big. Harry is short. Harry is little. Gary is wealthy. Fiona is poor. Fiona is rough. If someone is not strong then they are poor. If someone is not bad 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 poor and not strong then they are dull. If someone is short and little then they are sad. If someone is sad and not kind then they are rough. All smart people are quiet. 
Bob is not dull.