"Again to that accustom'd couch must creepWhere joy subsides, and sorrow sighs to sleep."
After day's fitful fever he sleeps well: and rest, a few short hours of it, is due to that perturbed spirit, which now,
….O'erlabour'd with his being's strife,Shrinks to that sweet forgetfulness of life…That sleep, the loveliest, since it dreams the least.(Lara.)