Jon Ronson on the Stanford prison experiment

Jenny Agutter: I saw a beautifully crafted character

How Call the Midwife team drew upon their own experiences of motherhood

Pippa Harris: Some of our younger crew hadn't realised it was illegal to be gay

How Miranda Hart joined Call the Midwife

Sheila Hancock on idealism

Celia Imrie on the importance of being bored

Irvine Welsh on 'Juice' Terry Lawson from A Decent Ride

Alex Salmond on joining the SNP while at university

Neil Gaiman's dark secret: A biography of Duran Duran

John Boyne on why Bruno reads Treasure Island

Robert Macfarlane on an extraordinary coincidence

Stephen Fry on Francis Bacon and his 'little man'

Celebrating difference: Andrew Solomon on parents of exceptional children

Stephen Fry on the Queen Mother's new television