A Nestorian Christian physician and translator active at Baghdad's House of Wisdom under Caliph al-Mutawakkil, Hunayn ibn Ishaq (Latin: Johannitius) translated or directed the translation of over a hundred Galen treatises, much of the Corpus Hippocraticum, the Timaeus, and an exegesis of Plato's Republic, plus Aristotelian logical works, developing a sense-for-sense translation method.