A lovely story, feel good as all Disney-Pixar films.
There's no real line between the movies thesis and the text. Great Art and great Artists can come from anywhere. Which leads to the greater theme of class. That this 'country' rat can come to the city and his talent and skill build a career that wouldn't have been expected.
There's so much regarding class, community, and familiarity tied up into it.
Truly a great experience.