sources of insight and intimations of possibilities that would otherwise be closed to us, simply because we would never manage to envision them for ourselves. Walter Hilton, a late fourteenth-century monk of the Augustinian priory of Thurgarton in Yorkshire, is one such person of significance for contemporary questions of Christian ecumenism. I find Hilton significant in both of the ways indicated above—as the authorial personality he projects in his surviving works, chief among them The Scale of