If you are really sincere in knowning on the legacy of tolerance and peace -then read this Book
The Ornament of the World: How Muslims, Jews, and Christians Created a Culture of Tolerance in Medieval Spain
Wriiten by world renowned scholor Maria Rosa Menocal -She is Sterling Professor of the Humanities at Yale University and also the Director of the Whitney Humanities Center
who is María Rosa Menocal? yale.edu/opa/v34.n15/story4.html