Sheikh's work includes a dissertation on ninth-century Arab Muslim thinker and moral teacher al-Harith, born Asad al-Muhasibi. Sheikh (William and Mary) has also presented at conferences and written journal articles—evidence of his significant scholarship in religious ethics. In the present book, Sheikh applies what is appropriately termed a “third wave” interpretation in comparative religious ethics. He adds to his previous writings by integrating a close reading of 20th-century Kurdish Muslim Qur'anic scholar Said Nursi (1878–1960) with work of French philosopher Pierre Hadot and with late-career, post–Iranian revolution writings of Michel Foucault. The introduction, “Narrating Ideal Muslim Subjectivities in a Foucauldian Register," provides a succinct orientation to the project. Four substantive chapters—two on Muhasibi and two on Nursi—bring received Muslim categories into a more general discussion that includes the formation of moral subjectivity, sincerity, and self-care practice central to the work of Hadot and Foucault. The result is a serious, consequential analysis that can show new ways to appreciate long-established practices and methods for Muslim moral formation. Extensive references, bibliography, and index. Summing Up: Recommended. Upper-division undergraduates through faculty.