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Titus Lucretius Carus

Titus Lucretius Carus

Titus Lucretius Carus (c. 99-55 BCE) was a Roman poet and philosopher who is best remembered for his com­prehensive epic On the Nature of Things. This remarkable work offered a dynamic worldview that departed significantly from the Aristotelian interpretation of this universe, life forms on earth, and the place our human species occupies within nature. Because his ideas differed greatly from those of the Greek thinker, Lucretius was not taken seriously by his contemporaries. In fact, his provocative thoughts on time, change, and reality would not be appreciated by scholars until his lost manuscripts were revived from philosophical oblivion during the Renaissance.

Aristotle had presented a geostatic and geocen­tric model of the universe. He separated the ethe­real heavens from our material planet and claimed that the finite but eternal spherical cosmos is enclosed by a fixed ceiling of stars, each star equi­distant from the earth. For him, both terrestrial linear motion and celestial circular motion are caused by the existence of the Unmoved Mover beyond the stars; this perfect entity of reflecting thought is the ultimate object that all desiring things attempt to emulate in terms of their devel­opment from potentiality to actuality. Within his philosophical system, Aristotle taught that species are eternally fixed, with the human animal occupy­ing the highest position in a static ladder of plan­etary organisms. Lucretius boldly challenged each of these basic Aristotelian assumptions.

Rejecting religious beliefs and ignorant supersti­tions, but indebted to the earlier thoughts of Epicurus, Lucretius presented a strictly naturalistic interpretation of and explanation for the existence of this eternal and infinite universe. He argued that endless reality consists only of material atoms and the void, there being no difference in makeup between celestial and terrestrial objects; thus, his natural philosophy taught the cosmic unity of all existence. Furthermore, Lucretius saw this dynamic universe as a creative process within which, over time, material atoms combine by chance to form an infinite number of stars, planets, and organ­isms. As a thoroughgoing naturalist, he taught that all objects and events are a part of an ongoing material reality that has no center, design, pur­pose, or goal.

For Lucretius, if there are immortal gods some­where in this universe, then they have no interest in human existence. Nevertheless, with his power­ful imagination, he speculated that life forms and intelligent beings (perhaps beings even superior to humans) exist elsewhere on other worlds through­out the cosmos. Within this dynamic worldview, Lucretius glimpsed the forthcoming evolutionary framework. He held that, over time, the material earth itself gave birth to those plants and animals that now inhabit this planet, including our own species. Furthermore, for him, organic history is full of both creativity and extinction.

With exceptional insight, Lucretius outlined the sociocultural development of the human animal. In their prehistoric state, our naked but robust ancestors lived in caves and subsisted on pears, acorns, and berries. They wandered through the forests and woodlands searching for wild beasts (e.g., boars, lions, and panthers) with clubs and stones. Later, our ancestors wore animal skins, learned to use fire, and lived in nomadic hunting/ gathering societies that waged war. Over time, humans even developed the use of symbolic lan­guage as articulate speech. With the emergence of agriculture, they learned to cultivate plants and domesticate animals. Eventually, civilizations appeared and flourished, with people living in cit­ies, using metals (first copper, then bronze, and later, iron), and developing art, law, and religion.

Lucretius offered penetrating insights into the nature of our universe and the history of life on earth that far surpassed the cosmology of Aristotle. He enlightened later thinkers with his bold specu­lations, influencing several recent major philoso­phers from Herbert Spencer and Henri Bergson to Alfred North Whitehead and Pierre Teilhard de Chardin. This is an impressive testament to Lucretius, whose astounding vision was first pre­sented over 2,000 years ago.

H. James Birx

See also Aristotle; Bergson, Henri; Bruno, Giordano; Cosmogony; Materialism; Ovid; Poetry; Presocratic Age; Rome, Ancient; Spencer, Herbert; Teilhard de Chardin, Pierre; Whitehead, Alfred North

Further Readings

Birx, H. J. (1984). Theories in evolution. Springfield, IL: Charles C Thomas.

Gale, M. R. (Ed.). (2007). Oxford readings in classical studies: Lucretius. Oxford, UK: Oxford University Press.

Gillespie, S., & Hardie, P. (Eds.). (2007). The Cambridge companion to Lucretius. Cambridge, UK: Cambridge University Press.

Lucretius. (1995). On the nature of things: De rerum natura (A. M. Esolen, Trans.). Baltimore, MD: Johns Hopkins University Press.

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