Book excerpt: The thirteen essays and the final poem contained in this volume reflect the fundamental importance of water across the whole breadth of medieval endeavour and understanding, as both source of life, and object of scholarly fascination, whose manifestations were the source of rich symbolism and imaginings. Ranging geographically from Ireland to the Arab world and from Iceland to Byzantium and chronologically from the fourth century CE to the sixteenth, the essays explore perceptions and theories of water through a wide range of approaches. Contributors are Michael Bintley, Tom Birkett, Laura Borghetti, Rafał Borysławski, Marilina Cesario, Marusca Francini, Kelly Grovier, Deborah Hayden, Simon Karstens, Andreas Lammer, David Livingstone, Luca Loschiavo, Hugh Magennis, Colin Fitzpatrick Murtha, François Quiviger, Elisa Ramazzina, and Karl Whittington.