Lovers and madmen have such seething brains, Such shaping fantasies, that apprehend More than cool reason ever comprehends. 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 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.