In Roald Dahl's book "The Twits," the quote highlights the idea that inner beauty is more important than physical appearance. It suggests that a person with good thoughts radiates positivity and charm, regardless of how they look on the outside. This notion emphasizes that kindness and a good heart can make anyone appear more attractive.

The message conveyed is that true beauty comes from within. Even if someone has physical imperfections, their positive thoughts and intentions will reflect on their demeanor, making them appear lovely to others. This reinforces the belief that a good character can enhance one’s overall presence and impact how they are perceived by the world.