The Life Lesson:
If you’re not born special, don’t bother.
How It’s Taught:
Great people aren’t born great, but they are born with the potential to be great, so if you aren’t born with said potential, you may as well give up.
In Potter-land, people can be neatly divided into those who can do magic, and those who can’t.
The muggles are well documented as being inferior to witches and wizards, but there’s even the pejorative term “squib” to be applied to those born into wizarding families who can’t do magic themselves.
They’re just as run-of-the-mill as muggles it seems, suggesting the only ones worth hearing about, are the special ones. How heartwarming.