The philosophical poem De Rerum Natura, written around the year 50 a. C. by a Roman named Titus Lucretius Carus, is both one of the greatest works of classical antiquity and one of the strangest. His poetic greatness seems to have been recognized almost immediately. The poet Ovid proclaimed that "the verses of sublime Lucretius' Doing so would last while the world. Cicero wrote that the poem was "not only rich in brilliant wit, but artistically high". And Virgil, referring to Lucretius in the Georgics, paid warm tribute to a man who "managed to find the causes of things and that has trampled all fears." This volume reproduces the extraordinary translation of Eduard Valentí Fiol.