One of the central concerns of the Journal is epistemological. Defoe's narrator, the curious, skeptical H.F., spends much of his time trying to interpret the phenomenon of the plague year. He addresses problems of perception – how can he see anything at all – and problems of interpretation – how can he understand what he is trying to observe. In his compulsion to make sense of the materials in his way, he demonstrates the problem of his age, the difficulty of reconciling a yearning for large patterns to the resistance the materials themselves bring. H.F. stands as a man of religious faith crossing warily over into the age of enlightenment, a man who consults his bible to plan his course but demonstrates at the same time that providential patterns cannot quite hold the plague in place.