The Conciliarist Idea of Islam in the Quattrocento —Prelude and Legacy.

This contribution intends to examine the impact of Conciliarism (1414–1439) on the Christian vision of Islam in the Quattrocento. The analysis of the thought of bishops such as Nicholas of Cusa (d. 1464) and John of Segovia (d. 1458) is understandable only through the evolution of the Latin world with regard to Islam, moving from the Corpus Toletanum (12th century) and the impact of the Crusades in the Levant (1096–1291) and in Europe. This forwardness is rooted in the process of "Islamic Christianization," an analytical operation lasting three centuries, during which Koranic Christology was to play a primary role. It will be through this "Christ-centric" process that from the Renaissance, the Ottoman empire, the great enemy of Western Christianity, will be appreciated for some of its peculiar facets. The weakening of the concept of heresy and of Catholic ecclesiastical authoritarianism in decreeing what heresy was probably one of the "indirect" outcomes of that dialogical "Moment of Vision" between Christianity and Islam. The further fragmentation of the Church of Rome, after the failure of Conciliarism and the outgrowth of the reformed Churches in the 16th century, favored a preliminary different understanding of the religiosity of others. [ABSTRACT FROM AUTHOR]