Lucretius offers his readers a complete guide to happiness and a total tour of the universe. Even a few selections from his poetry reveal the radical freethinker at his very best. This book draws on the latest research into the text and interpretation of Lucretius. It is aimed at the sixth-former or undergraduate who seeks a helpful introduction to the poem; and little background knowledge of Latin literature is assumed. The commentary elucidates both the poetic artistry and philosophical content of the De Rerum Natura.