My guest on this week's Book Club podcast is Fara Dabhoiwala, whose new book What Is Free Speech? The History of a Dangerous Idea looks not just at the origins of free speech as an idea, but also its uses and misuses. Fara tells me the bizarre story of how he found himself ‘cancelled’, gives us the scoop on who actually invented free speech and explains how to think more deeply about free speech as a global as well as a local question – by tracing how we got into our current predicaments.

My guest in this week’s Book Club podcast is the poet and novelist Joe Dunthorne, who is here to talk about his new non-fiction book Children of Radium: A Buried Inheritance. In it, he describes how he criss-crossed Europe in search of the truth about his great-grandfather, a Jewish scientist who found himself working on chemical weapons for the Nazis. Joe talks to me about historical guilt, the accidents of fate and human psychology – and making comedy out of tragedy.

My guest in this week’s Book Club is Francesca Simon. Best known for her Horrid Henry series of children’s books, Francesca has just published her first novel for grownups, a haunting reworking of a Welsh folk tale called Salka: Lady of the Lake. She tells me how she came to shift direction, what myths offer in terms of storytelling possibility – and why she never tired of her best-known creation.

My guest in this week's Book Club podcast is the novelist and journalist John Lanchester, one of the contributors to Michael Lewis’s very timely new anthology of reportage on the United States federal government, Who Is Government?: The Untold Story of Public Service. Can the public learn to love a bureaucrat? John tells me why he thinks the workings of government are misunderstood and under appreciated, why we should marvel at the making of the consumer price index, and why he thinks Elon Musk has ‘the wrong handle of the shopping bag’.

My guest in this week's Book Club podcast is the publisher Anthony Cheetham, one of the biggest figures in British publishing through the second half of the twentieth century and into this one. In his new book A Life in Fifty Books: A Publisher's Memoir, he looks back on his career. He tells me why he had a soft spot for Robert Maxwell; how he launched Ken Follett's career on the top deck of a bus; how losing a press-up competition changed the landscape of publishing (and upset his then wife); how publishing has changed – and how it hasn't; and why Confessions of a Window-Cleaner has a special place in his heart.

In this week's Book Club podcast, I'm joined by Donald Trump's outstanding Boswell, the magazine writer Michael Wolff. Michael’s new book, All or Nothing:  How Trump Recaptured America, takes Donald Trump and his colourful cast of hangers-on from the aftermath of the 6 January riots to his triumphal return to the White House. Michael tells me why he thinks people in Trumpworld are still talking to him, how the Donald has changed over the decade he has been reporting on him, why he’s confident American democracy will survive a second Trump presidency – and how world leaders, such as Keir Starmer, are best advised to handle this volatile and unpredictable character.

My guest on this week's Book Club podcast is the Assyriologist Selena Wisnom, author of The Library of Ancient Wisdom: Mesopotamia and the Making of History. Selena tells me about the vast and strange world of cuneiform culture, as evidenced by the life and reign of the scholar-king Ashurbanipal and the library – pre-dating that of Alexandria – that he left to the world. She describes the cruelty and brilliance of the Ancient Near East, the uses of lamentation, the capricious Babylonian gods, the ways in which we can recognise ourselves in our ancestors there – plus, what The Exorcist got wrong about Sumerian demons.

My guest in this week’s Book Club podcast is the novelist and critic James Bradley whose new book is Deep Water: The World in the Ocean. He tells me how we need to rethink our relationship with the sea and the life it contains, why fish are much more intelligent than we are used to imagining, and why – amid planetary doom – there’s still room for hope.

Sam's guest on today’s Book Club podcast is the musician, writer and photographer Colin Greenwood, who joins me to discuss his new book of photographs and memoir How To Disappear: A Portrait of Radiohead. Colin tells me about the band’s Mr Benn journey, photographing what you want to see… and what it takes to make Radiohead open a gig with 'Creep'. Produced by Patrick Gibbons and Oscar Edmondson.

My guest in this week's Book Club podcast is Philip Marsden, whose new book Under A Metal Sky: A Journey Through Minerals, Greed and Wonder looks in thrilling and surprising detail at the wonders that are to be found beneath our feet. On the podcast he takes me through the meanings that rocks and metals have had through human history, from the bronze age, via the alchemist's quest for the philosopher's stone, to the present day.