The greatest Roman poet, Virgil, about fifteen years old when Lucretius died, was under the spell of On the Nature of Things. “Blessed is he who has succeeded in finding out the causes of things,” Virgil wrote in the Georgics, “and has trampled underfoot all fears and inexorable fate and the roar of greedy Acheron.” Assuming that this is a subtle allusion to the title of Lucretius’ poem, the older poet in this account is a culture hero, someone who has heard the menacing roar of the underworld and triumphed over the superstitious fears that threaten to sap the human spirit.

