Os Guinness (DPhil, Oxford) was born in China and educated in England. He is the author or editor of thirty-five books, including The Call, Renaissance, Fool's Talk, Carpe Diem Redeemed, and Last Call for Liberty. He has been a visiting fellow at the Brookings Institution and a senior fellow at the EastWest Institute. A frequent speaker and prominent social critic, he has addressed audiences worldwide. A passionate advocate of freedom of religion and conscience for people of all faiths and none, he was the lead drafter for both the Williamsburg Charter and the Global Charter of Conscience. He lives with his wife, Jenny, in the Washington, DC, area.