'The Puzzle of Sex brings together in a deft, fascinating and easily accessible manner understandings of human sexuality based on current biblical scholarship, the insights and belief of different traditions, psychology and ethical discussion and argument. Traditional moral arguments are critically evaluated and current issues are clarified in a way that helps the reader come to a more mature assessment of their own views on this critical area of human experience.' -- Brendan Callaghan SJ, Heythrop College, University of London