This book provides a critical edition as well as a French translation of theDoubts About Galen, a polemical treatise written by Ab? Bakr al-R?z?, one of the most innovative clinicians and philosophers of the Arabo-Islamic Middle Ages. HisDoubts stand at the cross-roads of metaphysics, natural philosophy and medicine. The edition includes a comprehensive introduction which discusses the treatise' most significant philosophical features.

Pauline Koetschet, CNRS, Aix-Marseille Univ., Aix-en-Provence, France.