One thing that I think can be really difficult for us as adults to remember is that gifted kids aren't just smarter than other kids, they're smarter than adults. Adults may know more, but a person's ability to process information doesn't really change as they age (if anything, it decays), so these kids can often figure things out in half the time it takes the grown-ups in their lives. They know this, and it can lead to questioning any and all authority. Just a case of "I'm smarter than you, so I can figure it out myself". Austin's comment about teaching him the concept of earned authority is good. He also needs to learn the difference between knowledge and intelligence.
