Do individuals or broader forces shape history? In the 2025 Reith lectures on BBC Radio 4, Rutger Bregman argues that small groups of individuals can have an outsize influence and he looks to examples in history from suffragism to the ending of slavery. In the Free Thinking studio for Radio 4's round-table discussion about the history of ideas, Matthew Sweet is joined by:

Anne Applebaum, Pulitzer prize winning historian and author of Autocracy Inc, which looks at the networks linking powerful people in our world

Producer: Eliane Glaser

Why marry? Jane Austen began her novel Pride and Prejudice with the observation "It is a truth universally acknowledged, that a single man in possession of a good fortune, must be in want of a wife". Recent figures from the Office of National Statistics show less than half the adult UK population are married or in a legal partnership and predictions are that by 2050, only 3 in 10 people in the UK will marry.

Shahidha Bari hosts Radio 4's round-table discussion programme Free Thinking, which brings together philosophical and historical insights in a conversation about issues resonating in the present day. Her guests this week are:

Producer: Luke Mulhall

Rocks have shaped the fates of civilizations and the study of geology has transformed our intellectual landscape. In the 19th century developments in earth sciences led to the scientific rejection of Biblical timescales in favour of the far greater spans of geological time, which opened the way for Darwin's development of the theory of evolution by natural selection. More recently, historians have been keen to incorporate factors like access to natural resources and major events like earthquakes and volcanic eruptions into their accounts of the past and analyses of the present. Matthew Sweet asks how disciplines in the humanities, like history and political theory, might be transformed by incorporating insights and data from the earth sciences, and also how the earth sciences might be transformed if they become more historically and culturally aware. With historians Peter Frankopan and Rosemary Hill, geologist Anjana Khatwa, philosopher Graham Harman, and poet Sarah Jackson.

Producer: Luke Mulhall

What function do ceremonies like Armistice Day perform? How do we balance desires for reconciliation with feelings about revenge? How we remember wars and what commemoration means is much less settled than we might think. And that throws up questions, in times when conflicts are spreading close to us in western Europe, of how wars end and how we balance our concern for justice and peace with darker impulses?

Joining presenter Anne McElvoy for BBC Radio 4's roundtable discussion about the ideas shaping our world are:

Producer: Ruth Watts

"Doom-prepping" tech billionaires have been in the headlines recently and whether it’s ecological crisis or a breakdown in law and order, fear of societal collapse seems to lurk in the background of a lot of discussion in politics and wider society. But what does it mean? When has it happened in the past? Can we avoid it – or survive it – in the future? Joining presenter Shahidha Bari for Radio 4's roundtable discussion about the ideas shaping our world are:

Producer: Luke Mulhall

From economics to dreams: Anne McElvoy and guests consider the value of irrationality. How often is emotion, instinct and unsound thinking behind the decisions taken by governments, financial markets and citizens? And does it matter if long term strategic thinking relying on calm assessments of the trade offs, conventional wisdom and the lessons of experience take a back seat. Is there a value in irrationality? Guests include: Bronwen Maddox, Director and CEO of Chatham House, the international think tank; Lionel Barber, author of Gambling Man: The Wild Ride of Japan's Masayoshi Son; Salma Shah, who sits on the boards of Policy Exchange and the Centre for Science and Policy at the University of Cambridge; Patrick Foulis, the foreign editor at the Economist and, Jonathan Egid, philosopher and BBC/AHRC New Generation Thinker.

Producer: Ruth Watts

From military ceremonies to folk customs - can traditions really provide an answer to nationalism and boost local pride? Former MP Penny Mordaunt is publishing a book called Pomp and Circumstance: Why Britain's Traditions Matter written with Chris Lewis. She's one of Matthew Sweet's guests in the Free Thinking studio alongside

Producer: Robyn Read

Science is one of the major sources of authority in society today. Scientists develop technologies to make our lives easier and more comfortable. They fight diseases, they have identified and are helping to combat climate change. Yet developments like AI, and some areas of genetic science, seem to raise ethical dilemmas that scientists on their own can't address. And at a time when the authority of 'experts' has been challenged, where does that leave the authority of scientists? Shahidha Bari discusses science in society with theologian Dr Dafydd Mills Daniel, who's been working on Samuel Clarke, known as Newton's Bulldog, as a case study in the status of science in 17th century England, and Dr Sandra Knapp, researcher at the Natural History Museum and chair of the judges of this year's Royal Society Trivedi Science Book Prize. Also Hannah Devlin, science correspondent for The Guardian, Nick Spencer, Senior Fellow at Theos, and geneticist, author and broadcaster Adam Rutherford.

Producer: Luke Mulhall

What does living a good life involve? Michael Rosen's new book is called Good Days and offers suggestions to brighten our daily lives. Dr Sophie Scott-Brown is a research fellow at St Andrews' Institute of Intellectual History. The Rev'd Fergus Butler-Gallie has spent time working in the Czech republic and South Africa and ministering in parishes in Liverpool and London. His most recent book is Twelve Churches: An Unlikely History of the Buildings that made Christianity. Dr Rachel Wiseman lectures on philosophy at the University of Liverpool and explored the impact of the relative absence of women philosophers. Sudhir Hazareesingh is a Fellow and Tutor in Politics at Balliol, Oxford and author of "Daring to be Free: Rebellion and Resistance of the Enslaved in the Atlantic World, which raises questions about the Enlightenment's exclusion of enslaved people from the universal vision of a good society.

The six books shortlisted for the Wolfson History Prize 2025 which will be announced on December 2nd are:

• Embers of the Hands: Hidden Histories of the Viking Age by Eleanor Barraclough (Profile Books)

The judges for the Wolfson History Prize 2025 are Mary Beard, Sudhir Hazareesingh, Helen King and Diarmaid MacCulloch, with the panel chaired by David Cannadine.

Producer: Jayne Egerton

In party conference season, we look at what bonds party members and what it means to create a new network with its own shared beliefs and rituals. What light can the big thinkers from the worlds of anthropology and sociology shed? From political tribes to criminal gangs, from social media to social class - how do shared beliefs, rituals, rules and values bond us together - and pull us apart?

Anne McElvoy is joined by Kit Davis, emeritus professor of anthropology at the School of Oriental and African Studies at the University of London; Lynsey Hanley writer and author of Estates and Respectable: The Experience of Class; Adele Walton, Journalist and author of Logging Off; Alistair Fraser, professor of criminology at Glasgow University; assistant editor of The Spectator and political journalist and Isabel Hardman; and, Rebecca Earle, Professor of History and Chair of the British Academy Book Prize

Shortlist for the British Academy Book Prize announced on October 22nd:

Producer: Ruth Watts