Bill Paterson and Tom Chatfield

Actor Bill Paterson and tech philosopher Tom Chatfield join Harriett Gilbert' to discuss their favourite books by Christopher Hitchens, Terry Pratchett and Dava Sobel.

Small Gods by Terry Pratchett Publisher: Corgi

Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time by Dava Sobel Publisher: Harper Perennial

Mortality by Christopher Hitchens Publisher: Atlantic Books

First broadcast on BBC Radio 4 in June 2017.