Lucretius, Sheep and Atoms

2000 years ago Lucretius composed a long poem that theorised about atoms and the natural world. Written in the first century BCE, during a chaotic and frightening time when the Roman Republic was collapsing, Lucretius encouraged people to feel free through contemplating the physics of the Universe. He said that despite living through a time of bloody civil wars and dictatorship people should not believe they were sheep who had to follow those in power. Naomi discovers that the poem is an epic, beautiful and persuasive piece of work. It begins with a discussion of atoms. Lucretius, like Epicurus, followed the Greek tradition in believing that the universe is composed of tiny, indivisible particles. De Rerum Natura asks us to consider that all that really exists in the universe are these atoms and the void between them. Atoms are indestructible, the number of atoms in the universe is infinite and so is the void in which the atoms move. What Lucretius is saying here was revolutionary then – and still has the power to surprise. He’s saying that there are no supernatural forces controlling our lives, no fate pulling the strings, if there are gods they’re made of atoms just like everything else. There is nothing else. Naomi discusses the life of Lucretius and his poem with classicist Dr Emma Woolerton of Durham University. And she talks to particle physicist Professor Jonathan Butterworth of UCL about which of his theories still holds water today.Picture: Gathered sheep, Credit: Chris Strickland, Getty Images

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