The Invisible Child
Read. this. book. The end.
😉 Ok fine, I'll give you more than that. Katherine Paterson's essays on what children's literature does for the humans soul are unparalleled. They make me want to drop everything and read, read, read. Read alone. Read with people I love. Read. There are various collections of these essays (with a lot of crossover), but they are all out of print and can be difficult to find, so just get your hands on whichever one you can.
FROM THE PUBLISHER:
With the same perception, wit, and generosity that characterize her fiction, a much-honored writer shares her ideas about writing for children, as well as her passion for reading, her spiritual faith, and her conviction that the imagination must be nourished.