a really important theme in this book is that Harry does not want power and that is why he was able to retrieve the stone from the mirror and this shows this shows that he is really a good guy because Dumbledore trusts him to get the stone and he does not use the stone for himself so he has proved himself to everyone and not only that be he also defeated Voldemort not just anyone can do that because not even most of the teachers can do that. but Harry did and he is just a first year. this is a very important theme.