The orthodox reaction led by the As̱ẖ‘arite then was, in reality, nothing more than the transfer of dialectic method to the defence of the authority of Divine Revelation. In opposition to the Rationalists, they maintained the doctrine of the Attributes of God; and, as regards the Free Will controversy, they adopted a course lying midway between the extreme fatalism of the old school, and the extreme libertarianism of the Rationalists. They teach that the power of choice as well as all human actions are created by God; and that man has been given the power of acquiring[67:1] the different modes of activity. But Faḵẖral-Dīn Rāzī, who in his violent attack on philosophy was strenuously opposed by Tūsī and Qutbal-Dīn, does away with the idea of "acquisition", and openly maintains the doctrine of necessity in his commentary on the Qur’ān. The Mātarīdiyya--another school of anti-rationalist theology, founded by Abu Manṣūr Mātarīdī a native of Mātarīd in the environs of Samarqand--went back to the old rationalist position, and taught in opposition to the As̱ẖ‘arite, that man has absolute control over his activity; and that his power affects the very nature of his actions. Al-As̱ẖ‘arī's interest was purely theological; but it was impossible to harmonise reason and revelation without making reference to the ultimate nature of reality. Bāqilānī[68:1] therefore, made use of some purely metaphysical propositions (that substance is an individual unity; that quality cannot exist in quality; that perfect vacuum is possible.) in his Theological investigation, and thus gave the school a metaphysical foundation which it is our main object to bring out. We shall not, therefore, dwell upon their defence of orthodox beliefs (e.g. that the Qur’ān is uncreated; that the visibility of God is possible etc.); but we shall endeavour to pick up the elements of metaphysical thought in their theological controversies. In order to meet contemporary philosophers on their own ground, they could not dispense with philosophising; hence willingly or unwillingly they had to develop a theory of knowledge peculiar to themselves. [67:1] S̱ẖahrastānī--ed. Cureton, p. 69. [68:1] Martin Schreiner: Zur Geschichte des Ash‘aritenthums. (Huitième Congrès International des Orientalistes 1889, p. 82). God, according to the As̱ẖ‘arite, is the ultimate necessary existence which "carries its attributes in its own being"[69:1]; and whose existence (wujūd) and essence (Māhiyyat) are identical. Besides the argument from the contingent character of motion they used the following arguments to prove the existence of this ultimate principle:-- (1). All bodies, they argue, are one in so far as the phenomenal fact of their existence is concerned. But in spite of this unity, their qualities are different and even opposed to each other. We are, therefore, driven to postulate an ultimate cause in order to account for their empirical divergence.