Few writings by Epicurus have survived. However, there are independent attestations of his ideas from his later disciples. Some scholars consider the epic poem "De rerum natura" (Latin for "On the Nature of Things") by Lucretius to present in one unified work the core arguments and theories of Epicureanism. Many of the scrolls unearthed at the Villa of the Papyri at Herculaneum are Epicurean texts. At least some are thought to have belonged to the Epicurean philosopher Philodemus. Epicurus also had a wealthy 2nd c. AD disciple, Diogenes of Oenoanda, who had a portico wall inscribed with tenets of the philosophy erected in Oenoanda, Lycia (present day Turkey).