The lunatic, the lover, and the poet
  Are of imagination all compact.
    One sees more devils than vast hell can hold;
      That is the madman.  The lover, all as frantic,
        Sees Helen's beauty in a brow of Egypt.
          The poet's eye, in a fine frenzy rolling,
            Doth glance from heaven to earth, from earth to heaven;
              And as imagination bodies forth
                The forms of things unknown, the poet's pen
                  Turns them to shapes, and gives to airy nothing
                    A local habitation and a name.
 — William Shakespeare
  Devil