Nor hope to be myself less miserable
By what I seek, but others to make such
As I, though thereby worse to me redound:
For only in destroying I find ease
To my relentless thoughts

from John Milton – Paradise Lost, Book 8 on Rap Genius

Meaning

Satan knows that misery isn’t zero-sum — making Adam and Eve miserable won’t mitigate Satan’s own misery — but he’s still going to fuck shit up for humans, because he’s bored

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