The categorical imp of the perverse is a hybrid of Kant’s categorical imperative (“Act only in accordance with that maxim through which you can at the same time will that it become a universal law”) and Poe’s “imp of the perverse” (a force that will suddenly act in seeming opposition to reason). This strange imp will leap about in the following pages amid all manner of philosophical confusion and try to sew together again the patches of thought that have been ripped apart, but in motley fashion; for she is but a poor seamstress for such complicated quilting and, besides, the seams will, in the best of circumstances, burst again and require some new arrangement. There are tried and true patterns she will revert to, and for good reasons. But like all artists, she will deviate from the patterns, too, beginning new traditions and conventions in the place of old. That, however, all the patches are made of the same fabric—a fabric woven of the mind’s sympathy with the material world—we can be quite sure.