A famous excerpt from Roald Dahl's 'The Twits' illustrated by Quentin Blake, explaining how thoughts manifest physically.

An excerpt from a book featuring two paragraphs of text and Quentin Blake illustrations. The first shows a woman's face becoming progressively uglier over four panels due to 'ugly thoughts'. The second shows a woman with conventionally 'ugly' features looking radiant because of 'good thoughts'.

If a person has ugly thoughts, it begins to show on the face. And when that person has ugly thoughts every day, every week, every year, the face gets uglier and uglier until it gets so ugly you can hardly bear to look at it. A person who has good thoughts cannot ever be ugly. You can have a wonky nose and a crooked mouth and a double chin and stick-out teeth, but if you have good thoughts they will shine out of your face like sunbeams and you will always look lovely.