Andrew O'Hagan for On Friendship

Andrew O'Hagan is the bestselling author of novels including Mayflies, Our Fathers and Caledonian Road. He has been nominated for the Booker Prize, was voted one of Granta's Best of Young British Novelists in 2003, and won the E. M. Forster Prize from the American Academy of Arts and Letters. He is Editor-at-Large of the London Review of Books and a Fellow of the Royal Society of Literature.

Now, Andrew joins us for On Friendship, a heart-enriching celebration of what makes us great: our friends.

If we are lucky in our lives, our friendships will be rich and varied. They will be shared with those with two legs, with four legs, with whiskers or clean faces; they will come dressed in the simplicity of childhood or the professional attire of adult life; some will span decades, and some will be only fleeting. But the thing they will all have in common is that life is not only unimaginable - but unimagined - without them.

In these gorgeous personal reflections, Andrew explores friendship through music and poetry, memory and history, illuminating the many ways and reasons that people come together, and how our lives are all the better because we do.