Reflecting on the subjects from Plato's Timaeus at the centre of the disciplinary rivalry explored in the preceding chapters, I conclude that mind-body problems -- questions treating the extent to which psychic and 'mental' processes are separable from the corporeal realm -- provoked the most debate. My contention is that Galen's interpretation of a close link between the body and soul in the dialogue allowed himself and his sympathizers to give doctors a stake in psychological knowledge and trouble the distribution of value based on the corporeal-incorporeal dichotomy, which privileged philosophers. Therefore, the restrictive disciplinary laws imposed on doctors by Avicenna and Maimonides are a strategy to reclaim philosophy's hegemony on the soul and superior epistemic standing. While my study had divided Galen's successors into supporters and opponents of his project, I maintain that each Arabic actor tries to overwrite Galen's expertise with their own. Finally, I consider how my examination of the discursive reimagining of medicine can provide a longue durée perspective on modern reconceptualizations of the field, such as disputes about the relevance of the Medical Humanities.