Os Guinness is an author and social critic. Great-great-great grandson of Arthur Guinness, the Dublin brewer, he was born in China in World War II where his parents were medical missionaries. A witness to the climax of the Chinese revolution in 1949, he was expelled with many other foreigners in 1951 and returned to Europe where he was educated in England. He completed his undergraduate degree at the University of London and his D.Phil in the social sciences from Oriel College, Oxford. Os has written or edited more than thirty books. In this conversation, we will be discussing his latest book, The Magna Carta of Humanity: Sinai's Revolutionary Faith and the Future of Freedom.