"Ghazali is without doubt the most remarkable figure in all Islam. His doctrine is the expression of his own personality. He abandoned the attempt to understand this world. But the religious problem he comprehended much more profoundly than did the philosophers of his time. These were intellectual in their methods, like their Greek predecessors, and consequently regarded the doctrines of Religion as merely the products of the conception or fancy or even caprice of the lawgiver. According to them Religion was either blind obedience, or a kind of knowledge which contained truth of an inferior order.
"On the other hand Ghazali represents Religion as the experience of his inner Being. It is for him more than law and more than Doctrine; it is the Soul’s experience."
—"Philosophy in Islam," T. DeBoer.