Ostensibly about raking leaves, this book can be interpreted in a number of ways: by outlining the procedure of raking leaves, it prepares the raker to engage in deep thought or allows the reader to enter the same mental space that would be occupied if the reader were raking; by comparing the life cycle of leaves with that of other living things it invites the reader to see life from a new point of view; and it asks the reader to question why we deal with death the way we do (in Leonard Koren’s analogy, the dead leaves that are to be raked are the equivalent of our dead that must be dealt with in some way).
As enlightening as his other tome, 'How to Take a Bath'. If you get nothing else out of these books you will at least walk away with a tidy yard and improved hygiene.