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