This is a study of the intellectual history of the Andalusī Christians (alias Mozarabs) of Spain based on their Arabic and Latin polemical writings against Islam, c. 1050-1200. The first part of the book examines how these authors drew on earlier Oriental Arab-Christian theology, twelfth-century Latin-Christian theology, and the foundational texts of Islam itself -- the Qur'ān and ḥadīt -- for polemical purposes. The second part is a critical edition and English translation of the most important source, the Liber denudationis siue ostensionis aut...