After the death of his teacher...
After the death of his teacher, Imam al-Haramayn al-Juwayni, Ghazali moved to the court of Nizam al-Mulk, the powerful Vizier of the Seljuq Sultans, who eventually appointed him the Head of the Nizamiyyah College at Baghdad in 484 AH (1091AD). The second period of al-Ghazali’s life was his brilliant career as the highest-ranking orthodox-doctor of the Islamic community in Baghdad (484 AH; 1091- 95 AD). This period was short but significant.
During this time, he was busy refuting heresies and responding to questions from all segments of the community besides lecturing on Islamic jurisprudence at the College. In the political confusion that followed the assassination of Nizam al-Mulk and the subsequent violent death of Sultan Malik Shah, al-Ghazali himself fell into a serious spiritual crisis and finally left Baghdad, renouncing his career and the world.
This event marked the beginning of the third period of his life, that of retirement 484 -505 AH (1091-1111 AD). It included a short period of teaching at the Nizamiyyah College in Nishapur. After leaving Baghdad, he wandered as a Sufi in Syria and Palestine before returning to Tus, where he engaged in writing, Sufi practices and teaching his disciples until his death (Nakamura, 1998).
Aurelius Augustinus (Augustine, 354-430 AD) was one of the greatest and most influential of Christian philosophers (Pojman, 2003, p. 407; concise Routledge Encyclopedia of Philosophy, 2000, p. 63; Blackburn, p. 28; Honderich, 2005, p. 66; Audi, 2001, p. 60; Matthews, 1998), Theologian (Blackburn, p. 28; Audi, 2001, p. 60; Matthews, 1998), a source of Christian thought (Audi, 2001, p.
60; Matthews, 1998) and a seminal influence permeating every branch and every period of Western Christian ethics (Macqarre and Childress, p. 46). He was perhaps the most influential philosopher between Aristotle and Aquinas (Pojman, 2003, p. 407).
For well over eight centuries after his death, in fact, until the ascendancy of Thomas Aquinas at the end of the thirteenth century, Aurelius was also the single most influential Christian Philosopher (Matthews 1998; concise Routledge Encyclopedia of philosophy 2000, p. 63). Aurelius’ enormous influence on the doctrines of Western Christianity, were owed much to his skill and perseverance as a philosopher.