Of the three great civilizations of Western Eurasia and North Africa, that of Christian Europe began as the least developed in virtually all aspects of material and intellectual culture, well behind the Islamic states and Byzantium.

For some generations before Muhammad, the Arab mind had been, as it were, smouldering, it had been producing poetry and much religious discussion; under the stimulus of the national and racial successes it presently blazed out with a brilliance second only to that of the Greeks during their best period. From a new angle and with a fresh vigour it took up that systematic development of positive knowledge, which the Greeks had begun and relinquished. It revived the human pursuit of science. If the Greek was the father, then the Arab was the foster-father of the scientific method of dealing with reality, that is to say, by absolute frankness, the utmost simplicity of statement and explanation, exact record, and exhaustive criticism. Through the Arabs it was and not by the Latin route that the modern world received that gift of light and power.

For many centuries the world of Islam was in the forefront of human civilization and achievement ... In the era between the decline of antiquity and the dawn of modernity, that is, in the centuries designated in European history as medieval, the Islamic claim was not without justification.