Jealousy is the injured lover's hell

Nor jealousy Was understood, the injur'd lover's hell.

Long is the way And hard, that out of Hell leads up to light

Which way I fly is Hell; myself am Hell; And in the lowest deep a lower deep Still threat'ning to devour me opens wide, To which the Hell I suffer seems a Heav'n

The mind is a universe and can make a heaven of hell, a hell of heaven.

Infernal world, and thou profoundest Hell
Receive thy new Possessor: One who brings
A mind not to be chang'd by Place or Time.
The mind is its own place, and in it self
Can make a Heav'n of Hell, a Hell of Heav'n.