Dan Chiasson, hailed as "one of the most gifted poets of his generation" upon the appearance of his first book, takes inspiration for his stunning new collection from the Historia Naturalis of Pliny the Elder. "What happens next, you won't believe," Chiasson writes in "From the Life of Gorky," and it is fair warning. This collection suggests that a person is like a world, full of mysteries and wonders-and equally in need of an encyclopedia,...