Many eyes have been cast over this work at different stages, from idea to finished book, and it could not have reached completion without the particular input, support, and constructive criticism of the following people: Annette Volfing, Helen Moore, Almut Suerbaum, Elizabeth Andersen, Nigel Palmer, Charlotte Woodford, Nicholas Boyle, and Boydell & Brewer’s reviewers. I must also thank those people who have discussed and shared their own research with me: Neil Kenny, who spoke with me about curiosity at an early stage; David Wallace and Ora Limor for allowing me access to the Jerusalem chapter in the then-forthcoming Europe: A Literary History, 1348-1418; Professor Limor a second time for meeting me in Jerusalem to discuss pilgrimage; and Diana Lipton for showing me around the Old City.