“I hated Shakespeare in school,” James Shapiro says cheerfully. “I didn’t get it. I didn’t even get the dirty bits in Romeo and Juliet that my classmates all seemed to get.” It’s an unexpected admission from an internationally renowned expert on Shakespeare. A writer and professor of English at Columbia University, Shapiro’s book 1599: A Year in the Life of William Shakespeare won the Baillie Gifford Winner of Winners prize last year, having first won the award in 2006 (it was then known as the Samuel Johnson prize). What changed his mind was seeing Shakespeare’s plays performed. “I started backpacking...