Professor Das argues that the five-volume medical compilation the Canon of Medicine (Al-Qānūn fī l-ṭibb) by the Persian polymath Ibn Sīnā (980–1037) represents a revisionist project, whose aim is to restore the disciplinary boundary between medicine and philosophy. While Ibn Sīnā himself was a philosopher who made his career as a doctor, he heavily criticized his Greek forerunner Galen (d. c. 217 CE) for claiming that ‘the best doctor was also a philosopher’. By examining Ibn Sīnā’s hierarchical conception of science, she will show how he restricts medical inquiry to the treatment of diseases and the maintenance of health, whereas Galen approaches the body as a steppingstone to broader cosmic truths. The title of the Canon of Medicine suggests that the text offers a new set of laws for studying medicine. However, as Professor Das contend, these laws ultimately fail to supplant Galen’s vision of medicine because Ibn Sīnā, even in the Canon of Medicine, cannot entirely remove himself from the philosophical-medical tradition of Galenism.