Medicine and pneumatology: Henry More, Richard Baxter, and Francis Glisson's Treatise on the Energetic Nature of Substance.

The nature of the soul and its relationship to the body has always proved problematical for Christian philosophy. The source of the difficulty can be traced back to the efforts of the early Fathers to reconcile the essentially pagan concept of an immaterial and immortal soul with apostolic teachings about the after-life in which all the emphasis is placed upon the resurrection of the body. The tensions between these two traditions inevitably became strained during the sixteenth century when Protestant reformers insisted on a closer adherence to Scripture. Furthermore, even when leaving the problems of Scriptural hermeneutics aside, the dualistic approach to the question, in which soul (or spirit) and body are held to be categorically different in essence, had to overcome a number of intractable philosophical problems. So, it was not simply coincidence that when the new mechanical philosophy began to be formulated in a systematic way in the seventeenth century, it was couched in vigorously dualistic terms. In fact, three of the earliest fully elaborated systems of mechanical philosophy, those of Descartes, Digby, and Charleton, were explicitly intended to provide a philosophical prop for dualist theology.' Moreover, it was because of its usefulness in promoting dualism that Cartesianism was first popularized in England not by a natural philosopher but by the Cambridge Platonist and theologian, Henry More.2