The religious phenomena of the Period will be discussed in a separate chapter, and here I can only allude cursorily to their general character. We have seen that during the whole Umayyad epoch, except in the brief reign of ‘Umar b. ‘Abd al-‘Azíz, the professors of religion were out of sympathy with the court, and that many of them withdrew from all participation in public affairs. It was otherwise when the ‘Abbásids established themselves in power. Theology now dwelt in the shadow of the throne and directed the policy of the Government. Honours were showered on eminent jurists and divines, who frequently held official posts of high importance and stood in the most confidential and intimate relations to the Caliph; a classical example is the friendship of the Cadi Abú Yúsuf and Hárún al-Rashíd. The century after the Revolution gave birth to the four great schools of Muhammadan Law, which are still called by the names of their founders--Málik b. Anas, Abú Ḥanífa, Sháfi‘í, and Ahmad b. Ḥanbal. At this time the scientific and intellectual movement had free play. The earlier Caliphs usually encouraged speculation so long as it threatened no danger to the existing _régime_. Under Ma’mún and his successors the Mu‘tazilite Rationalism became the State religion, and Islam seemed to have entered upon an era of enlightenment. Thus the first ‘Abbásid period (750-847 A.D.) with its new learning and liberal theology may well be compared to the European Renaissance; but in the words of a celebrated Persian poet-- _Khil‘atí bas fákhir ámad ‘umr ‘aybash kútahíst._[516] "Life is a very splendid robe: its fault is brevity." [Sidenote: The triumph of orthodoxy.] The Caliph Mutawakkil (847-861 A.D.) signalised his accession by declaring the Mu‘tazilite doctrines to be heretical and by returning to the traditional faith. Stern measures were taken against dissenters. Henceforth there was little room in Islam for independent thought. The populace regarded philosophy and natural science as a species of infidelity. Authors of works on these subjects ran a serious risk unless they disguised their true opinions and brought the results of their investigations into apparent conformity with the text of the Koran. About the middle of the tenth century the reactionary spirit assumed a dogmatic shape in the system of Abu ’l-Ḥasan al-Ash‘arí, the father of Muḥammadan Scholasticism, which is essentially opposed to intellectual freedom and has maintained its petrifying influence almost unimpaired down to the present time. I could wish that this chapter were more worthy of the title which I have chosen for it, but the foregoing pages will have served their purpose if they have enabled my readers to form some idea of the politics of the Period and of the broad features marking the course of its literary and religious history. CHAPTER VII POETRY, LITERATURE, AND SCIENCE IN THE ‘ABBÁSID PERIOD [Sidenote: The Pre-islamic poets regarded as classical.]