The decadence which did occur in the Islamic world belongs to a much later period of Islamic history than is usually claimed. This fact would be fully substantiated if the integral history of Islamic science and civilization were to be written one day. Unfortunately to this day such a detailed history does not exist and moreover much of the scholarly work that has been done in this field has been carried out by Western scholars who have been naturally primarily interested in those aspects of the Islamic sciences that have influenced the West. It remains the task of Muslims scholars and scientists to look upon the whole of this scientific tradition from the point of view of Islam and the inner dynamics of Islamic history itself.