ユダヤ教、キリスト教、イスラーム

ペトルス・アルフォンスィ『ユダヤ人との対話』を中心に

抄録

Peter Alfonsi was a Jewish convert in the 12th century Spain and wrote Dialogue against the Jews. This is an anti-Jewish and -Islamic tract by the authority and rational argument.
The focus of this paper is to consider his conception of ratio(reason) by dealing with his indicts for Talmudic anthropomorphic interpretation of the Old Law and his critical opinions of Mohammad, Islamic customs and the Qur'an, and his unusual Trinitarian speculation.
His conception of reason was based on his unique view of the liberal arts in his Epistola ad peripateticos. Instead of the traditional seven arts, he presented the six arts; dialectic, arithmetic, geometry, physica(medicine), music and astronomy. So in his criticizing of Judaism and Islam, he made full use of logical demonstrations and at the same time, of cosmological, astronomical and medical knowledge of Arabic sciences. This was a radically new polemic for the western intellectuals of the early 12th century. Therefore, this tract was the most influential and widely read one to the 16th century in Western Europe.