Timandra Harkness is a journalist, comedian and statistician. She is a regular on BBC Radio 4, writing and presenting How To Disagree, a beginner’s guide to having better arguments and FutureProofing, a series looking at the social impact of new big ideas. She also presents documentaries such as Data, Data Everywhere and Personality Politics, and was resident reporter on social psychology series The Human Zoo.

In this episode, she talks to Elizabeth about her childhood, why its important to hear ideas you don't like so that yours are better informed, and why she chose to study mathematics and statistics as a way of finding out answers to life's bigger questions. She also talks about Artificial Intelligence, and why it's no replacement for human enquiry and empathy.

Follow Elizabeth at @theoselizabeth and Theos Think Tank at @theosthinktank to keep up to date with future episodes, events and research.

Ian Dunt is editor of politics.co.uk. He specialises in issues around immigration, civil liberties, democracy, free speech and social justice. He also writes for other publications, including the Erotic Review, and regularly features in British newspapers and television programmes.

In this episode Ian talks about the future of liberalism, what studying philosophy and taking drugs taught him about faith, and his short stint as a Christian. He also talks about the rise of political extremism, and the dangers of letting it grow by ignoring it.

This episode also features a conversation with Theos researcher Simon Perfect, about the state of religious education in British schools, and why there are so few qualified RE teachers across the country.

Follow Elizabeth Oldfield on Twitter at @theoselizabeth, and The Sacred at @Sacred_Podcast. You can also follow Theos on Twitter @Theosthinktank, or check out www.theosthinktank.co.uk.

Krista Tippett is an American journalist, author, and entrepreneur. She created and hosts the public radio program and podcast On Being, a podcast about spirituality, politics, ethics and faith. In 2014, she was awarded the National Humanities Medal by President Barack Obama.

In this episode, Krista talks about growing up in a faith community in Oklahoma, her time as a journalist working in East Germany, and the genesis of On Being as a public radio programme. She also talks about the ways in which civil dialogue could be improved, and the power of listening, even to those with whom you deeply disagree.

This episode also features a conversation with Theos' director of research Nick Spencer, who talks about "The Inner Level" by Kate Pickett and Richard Wilkinson. The follow up to "The Spirit Level", the book argues that societies that are more equal perform better at every level of life.

Follow Theos at @theosthinktank, and follow Elizabeth Oldfield @theoselizabeth. To review the show, or make your thoughts heard, email sacredpodcast@gmail.com.

Dr Lois Lee is Research Fellow in the Department of Religious Studies at the University of Kent. She is a sociologist whose work focuses on the empirical study of nonreligion and atheism and, more widely, on the theory and study of culturally diverse and differentiated societies. Lois is founding director of the Nonreligion and Secularity Research Network and co-edits the journal Secularism and Nonreligion.

In this episode, Lois talks about what its like to study Nonreligion as an academic term, the differences it has from atheism, and how, despite being nonreligious, she has still learnt a great deal from religious communities.

This episode also features an interview with Theos researcher Ben Ryan on migration and the role religious groups are playing in refugee aid and resettlement.

Tom Shakespeare, is an English sociologist and broadcaster. He is Professor of Disability Research in the medical faculty at the University of East Anglia (UEA)and a member of the Nuffield Council on Bioethics. He is also known for his work and activism around disability rights in the UK.

In this episode, he talks about the role of religion in his upbringing, agnosticism and finding solace in Quakerism. He also talks about his work as an activist, and the challenges that people with disabilities face in the age of austerity.

This episode also features a conversation with Theos' Natan Mladin about the idea of 'thinking about thinking'.

Follow us on @sacred_podcast and on Twitter, follow Elizabeth at @Theoselizabeth. You can also follow Theos at @theosthinktank to keep up to date with news, events and the latest research.

Ronan is the founder of Alter Ego, a global network of progressive leaders exploring the connection between personal, cultural and political renewal. He is also the Head of Strategy at Perspectiva, a research institute building the intellectual foundations for a more conscious society.

His background is in political strategy and organisational change. Before the age of 28, he was a consultant scenario planner to the British Foreign Office, and a Director of Futures, Strategy and Animation at RPC, an award winning City Law Firm.

In this episode, Ronan talks about growing up in a small town in Ireland, moving to London and his relationship with faith and psychedelic drugs. He also talks about the need for better conversations - not only to advance our politics, but to better ourselves as human beings.

This episode also features a conversation between Theos staff Simon Perfect and Anna Wheeler, who talk about how music has helped them navigate their own faith.

For more information on Theos, follow @theosthinktank on Twitter. You can also follow Elizabeth Oldfield on Twitter at @theoselizabeth.

Claire Fox is a British writer, and the head of the Institute of Ideas think tank. She was formerly the editor of LM magazine, and is a panellist on the BBC's "Moral Maze'.

In this episode, Claire talks about her childhood, growing up with parents on both sides of the political spectrum. She talks about her time as a Trotskyist in university, and how her passion for free expression led her to found the Institute of Ideas, which holds its festival each year in London. She also talks about the nature of offence in free speech debates and our wider political discourse.

This episode also features a conversation with Ben Ryan, a researcher at Theos, on Amy Chua's latest book "Political Tribes: Group Instinct and the Fate of Nations".

Tom Chivers is a writer, who specialises in the intersection of science, philosophy and politics. He was a former staff writer at BuzzFeed UK and an assistant comment editor at the Telegraph. He's currently writing a book about Artificial Intelligence.

In this episode, he talks about atheism, the value of truth and verification. He also talks about attaining truth through scientific methods, taking principles from both classical philosophy and computer science to interrogate the hard questions. Finally, he talks about the UK's media environment, and how best to handle an altercation on Twitter.

The episode also features Nick Spencer, who talks about his upcoming conversation with Stephen Pinker, and his review of the writer John Gray's "Seven Types of Atheism", which is now available on the Theos website.

You can follow Theos at @theosthinktank and you can follow Elizabeth at @theoselizabeth on Twitter.

Jonathan Derbyshire is Executive Comment Editor at the Financial Times. He was previously Managing Editor of Prospect, Britain’s leading monthly magazine of politics and ideas, and Culture Editor of the New Statesman. Jonathan has also written for a number of other publications, including the Guardian, the Observer and the Times Literary Supplement. In a previous life, he taught philosophy in several British universities.

In this episode, He talks with Elizabeth about his youth, what it means to be a secular liberal, and the experiences that come with working at the UK's leading financial newspaper during the age of post-truth.

Sally Phillips is an English actress, television presenter and comedian. She co-created and was one of the writers of sketch comedy show Smack the Pony. She is also known for her main role in Miranda as Tilly, Parents as Jenny Pope and Set the Thames on Fire as Colette in 2015. Phillips has also worked on films such as Burn Burn Burn as Ingrid alongside Laura Carmichael. Since 2004, she has played the title role in the BBC Radio 4 comedy show Clare in the Community. Since 2018, she has been curator of "The Museum of Curiosity" on the BBC Radio 4 comedy programme of that name.

In this episode, Elizabeth speaks to Sally about her relationship with faith over the span of her career, why at times, you may have to give up the things you hold sacred to pursue wider goals, and her experience as an activist, campaigning on issues for parents looking after children with Downs' syndrome.