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.
Such tricks hath strong imagination
That, if it would but apprehend some joy,
It comprehends some bringer of that joy;
Or in the night, imagining some fear,
How easy is a bush supposed a bear!
—A Midsummer Night’s Dream (Act V, scene 1)