Quoting from Preparing for a Trip and A Day In the Life
In Fahrenheit 451, Ray Bradbury discusses the importance of reading, explaining what sets books apart from more passive forms of expression.
A book, he says, can be put down. In between the pages of the book, the reader can pause to insert his or her own thoughts and ideas, or grapple with those posed by the author. Walking is much the same, allowing for pause and consideration of the landscape, rather than inscrutably rapid motion over it.