Most textbooks on the history of economic theory scarcely mention the Islamic contribution. The writings of Grice-Hutchinson, Lowry, and Essid are notable exceptions, in that they offer a broad summary of the Islamic literature that enriched the Mediterranean tradition. Yet, Islamic civilization simply deepened the flow of ideas inherited from Antiquity before, and passed them on. From the twelfth century, its brilliance started a slow transfer of Islamic knowledge to a West which was ready to receive it.