Milton's Satan & Mizoguchi's Hell

These lines from Book I of Milton's Paradise Lost express Satan's idea that Hell is a state of mind:

The mind is its own place, and in itself
Can make a Heaven of Hell, a Hell of Heaven.

What matter where, if I be still the same ....
This is what Mishima surely has in mind with Kashiwagi's remark that "Beautiful scenery is Hell, ins't it?" and elsewhere.