Aside the Devil turned
For envy, but with jealous leer malign
Eyed them askance and to himself thus plained:
‘Sight hateful! Sight tormenting! Thus these two
Imparadised in one another’s arms,
The happier Eden, shall enjoy their fill
Of bliss on bliss while I to Hell am thrust
Where neither joy nor love but fierce desire
(Among our other torments not the least)
Still unfulfilled with pain of longing pines.’
— Paradise Lost, Book IV, by John Milton