In his new collection of essays, Will Schwalbe points out that all books are at the mercy of the reader's mood. And not just books — every piece of art. Schwalbe quotes the 19th-century critic John Ruskin: “When I have been unhappy, I have heard an opera from end to end, and it seemed the shrieking of winds; when I am happy, a sparrow's chirp is delicious to me. .â??.â??. It is not the chirp .â??.â??. but I that makes it sweet.”
