"He who saw the Deep" are the first words of the standard version of The Epic of Gilgamesh, the subject of this discussion between Melvyn Bragg and his guests. Gilgamesh is often said to be the oldest surviving great work of literature, with origins in the third millennium BC, and it passed through thousands of years on cuneiform tablets. Unlike epics of Greece and Rome, the intact story of Gilgamesh became lost to later generations until tablets were discovered by Hormuzd Rassam in 1853 near Mosul and later translated. Since then, many more tablets have been found and much of the text has been reassembled to convey the story of Gilgamesh, king of Uruk the sheepfold, and Enkidu who the gods created to stop Gilgamesh oppressing his people. Together they fight Humbaba, monstrous guardian of the Cedar Forest, and kill the Bull of Heaven, for which the gods make Enkidu mortally ill. Gilgamesh goes on a long journey as he tries unsuccessfully to learn how to live forever, learning about the Great Deluge on the way, but his remarkable building works guarantee that his fame will last long after his death.

With

Andrew George

Frances Reynolds

and

Martin Worthington

Producer: Simon Tillotson.

The scientist John Dalton was born in North England in 1766. Although he came from a relatively poor Quaker family, he managed to become one of the most celebrated scientists of his age. Through his work, he helped to establish Manchester as a place where not only products were made but ideas were born. His reputation during his lifetime was so high that unusually a statue was erected to him before he died. Among his interests were meteorology, gasses and colour blindness. However, he is most remembered today for his pioneering thinking in the field of atomic theory.

With:

Jim Bennett

Aileen Fyfe

James Sumner

Producer: Victoria Brignell.

Melvyn Bragg and guests discuss the changes in the intellectual world of Western Europe in the 12th Century, and their origins. This was a time of Crusades, the formation of states, the start of Gothic architecture, a reconnection with Roman and Greek learning and their Arabic development and the start of the European universities, and has become known as The 12th Century Renaissance.

The image above is part of Notre-Dame de la Belle-Verrière, Chartres Cathedral, from 1180.

With

Laura Ashe

Elisabeth van Houts

and

Giles Gasper

Producer: Simon Tillotson.

Melvyn Bragg and guests discuss plasma, the fourth state of matter after solid, liquid and gas. As over ninety-nine percent of all observable matter in the Universe is plasma, planets like ours, with so little plasma and so much solid, liquid and gas, appear all the more remarkable. On the grand scale, plasma is what the Sun is made from and, when we look into the night sky, almost everything we can see with the naked eye is made of plasma. On the smallest scale, here on Earth, scientists make plasma to etch the microchips on which we rely for so much. Plasma is in the fluorescent light bulbs above our heads and, in laboratories around the world, it is the subject of tests to create, one day, an inexhaustible and clean source of energy from nuclear fusion.

With

Justin Wark

Kate Lancaster

and

Bill Graham

Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the origins of the Hindu goddess Lakshmi, and of the traditions that have built around her for over 3,000 years. According to the creation story of the Puranas, she came to existence in the churning of the ocean of milk. Her prominent status grew alongside other goddesses in the mainly male world of the Vedas, as female deities came to be seen as the Shakti, the energy of the gods, without which they would be powerless. Lakshmi came to represent the qualities of blessing, prosperity, fertility, beauty and good fortune and, more recently, political order, and she has a significant role in Diwali, one of the most important of the Hindu festivals.

With

Jessica Frazier

Jacqueline Suthren-Hirst

and

Chakravarthi Ram-Prasad

Producer: Simon Tillotson.

Melvyn Bragg and guests discuss Animal Farm, which Eric Blair published under his pen name George Orwell in 1945.

A biting critique of totalitarianism, particularly Stalinism, the essay sprung from Orwell's experiences fighting Fascists in Spain: he thought that all on the left were on the same side, until the dominant Communists violently suppressed the Anarchists and Trotskyists, and Orwell had to escape to France to avoid arrest.

Setting his satire in an English farm, Orwell drew on the Russian Revolution of 1917, on Stalin's cult of personality and the purges. The leaders on Animal Farm are pigs, the secret police are attack dogs, the supporters who drown out debate with "four legs good, two legs bad" are sheep.

At first, London publishers did not want to touch Orwell's work out of sympathy for the USSR, an ally of Britain in the Second World War, but the Cold War gave it a new audience and Animal Farm became a commercial as well as a critical success.

Featuring:

Steven Connor - Grace 2 Professor of English at the University of Cambridge

Mary Vincent - Professor of Modern European History at the University of Sheffield

Robert Colls - Professor of Cultural History at De Montfort University

Producer: Simon Tillotson

First broadcast on BBC Radio 4 in September 2016.

In a programme first broadcast in 2016, Melvyn Bragg and guests discuss Zeno of Elea, a pre-Socratic philosopher from c490-430 BC whose paradoxes were described by Bertrand Russell as "immeasurably subtle and profound." The best known argue against motion, such as that of an arrow in flight which is at a series of different points but moving at none of them, or that of Achilles who, despite being the faster runner, will never catch up with a tortoise with a head start. Aristotle and Aquinas engaged with these, as did Russell, yet it is still debatable whether Zeno's Paradoxes have been resolved.

With

Marcus du Sautoy

Barbara Sattler

and

James Warren

Producer: Simon Tillotson

Melvyn Bragg and guests discuss the development of photography in the 1830s, when techniques for 'drawing with light' evolved to the stage where, in 1839, both Louis Daguerre and William Henry Fox Talbot made claims for its invention. These followed the development of the camera obscura, and experiments by such as Thomas Wedgwood and Nicéphore Niépce, and led to rapid changes in the 1840s as more people captured images with the daguerreotype and calotype. These new techniques changed the aesthetics of the age and, before long, inspired claims that painting was now dead.

With

Simon Schaffer

Elizabeth Edwards

And

Alison Morrison-Low,

Producer: Simon Tillotson.

Melvyn Bragg and guests discuss the history of the idea of Sovereignty, the authority of a state to govern itself and the relationship between the sovereign and the people. These ideas of external and internal sovereignty were imagined in various ways in ancient Greece and Rome, and given a name in 16th Century France by the philosopher and jurist Jean Bodin in his Six Books of the Commonwealth, where he said (in an early English translation) 'Maiestie or Soveraigntie is the most high, absolute, and perpetuall power over the citisens and subiects in a Commonweale: which the Latins cal Maiestatem, the Greeks akra exousia, kurion arche, and kurion politeuma; the Italians Segnoria, and the Hebrewes tomech shévet, that is to say, The greatest power to command.' Shakespeare also explored the concept through Richard II and the king's two bodies, Hobbes developed it in the 17th Century, and the idea of popular sovereignty was tested in the Revolutionary era in America and France.

With

Melissa Lane

Richard Bourke

and

Tim Stanton

Producer: Simon Tillotson.

Melvyn Bragg and guests discuss William Blake's collection of illustrated poems "Songs of Innocence and of Experience." He published Songs of Innocence first in 1789 with five hand-coloured copies and, five years later, with additional Songs of Experience poems and the explanatory phrase "Shewing the Two Contrary States of the Human Soul." Blake drew on the street ballads and improving children's rhymes of the time, exploring the open and optimistic outlook of early childhood with the darker and more cynical outlook of adult life, in which symbols such as the Lamb belong to innocence and the Tyger to experience.

With

Sir Jonathan Bate

Sarah Haggarty

And

Jon Mee

Producer: Simon Tillotson.