In today’s world of #hashtags, shortcuts and life hacks, our attention is sliced finer than the vellum folios of a 900-year-old grimoire. It takes will to cultivate consistent, in-depth practice. To illustrate this, I’d like to invoke the hidden devilish drive of determination in two of among the most famous English poems of all time (and a bonus poem), and why I always read and re-read them when preparing for evocatory procedures.