A personal view by James Burke
2: In the Light of the Above When 11th-century mercenaries looted Arab Spain, the treasure they found shook Christian
Europe to its foundations. It gave us law, universities, the Gothic cathedrals, and showed how to make a rainbow.
Written and presented by JAMES BURKE
Series producer RICHARD REISZ Producer JOHN LYNCH
Book, £14.95 from booksellers