Such a movement as orthodox scholasticism was inevitable. The position at the end of the third century was quite impossible. The orthodox Muslim adhered strictly to tradition, and entirely refused to admit "innovation" (bid'a): he had been forced into this position as a reaction against his earlier ready acceptance of Plato and Aristotle as inspired teachers, for the later errors of the Mu'tazilites showed what extremely dangerous conclusions could be drawn by those who came under Hellenistic influence, and the more accurately the Greek philosophers were studied the worse the heresies gathered from them. Orthodox thought held itself carefully aloof from the Mu'tazilites and philosophers on the one side, and from the Shi'ites and Sufis on the other, confining itself to the safe studies of Qur'an exegesis, tradition, and the canon law in which at Baghdad the reactionary influence of Ibn Hanbal was predominant. The whole of the third century had been a time of reaction on the part of the orthodox, very largely due to the unfortunate attempt of al-Ma'mun to force rationalism on his subjects. Al-Ghazali tells us in his "Confessions" that some sincere Muslims felt themselves bound to reject all the exact sciences as of dangerous tendency, and so repudiated scientific theories as to eclipses of the sun and moon. All speculation lay under a ban, because it led to "innovation" in belief or in practice; it was contrary to orthodoxy to use the methods of Greek philosophy to prove revealed doctrine as much as it was to impugn it, for both alike were innovations