"On the Nature of Things is not an easy read. Totaling 7,400 lines, it is written in hexameters, the standard unrhymed sixbeat lines in which Latin poets like Virgil and Ovid, imitating Homer's Greek, cast their epic poetry. Divided into six untitled books, the poem yokes together moments of intense lyrical beauty, philosophical meditations on religion, pleasure, and death, and complex theories of the physical world, the evolution of human societies, the perils and joys of sex, and the nature of disease. The language is often knotty and difficult, the syntax complex, and the overall intellectual ambition astoundingly high."