Co-edited with Vincent J. Cornell, my former Duke colleague and now chaired professor at Emory University, this reference work was published in February 2023.

Consisting of 25 chapters, WBCIS is divided into two parts, expressive and performative, with introductory prefaces to both parts, and the goal of making Islamic spirituality a vivid cornerstone of historical and contemporary engagement with the T-A-O of all existence: Allah.

Allah is the T-hing, the A-bsolute, the O-ne, for Muslims as for others who share the expanse of Islamicate culture, whether Jewish, Christian, Buddhist or Hindu.