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This paper presents a new fragment of Philoponus' treatise De aeternitate mundi contra Aristotelem. The fragment, preserved only in an Arabic translation by al-Bīrūnī, derives in all probability from the third book of the treatise, and it deals with the moonstone or selenite. It is hypothesized that this mirabile, which is described by Damascius in his Life of Isidore, was deployed by Philoponus at the point of his polemic against Aristotle.

Nouveau fragment arabe du De aeternitate mundi contra Aristotelem de Jean Philopon