For make no mistake: Evil does exist in the world.
It is hard to believe that such evil could exist.
What Simon realizes is that evil does not exist outside man's nature.
So you are not truly asking whether pure evil, in and of itself, can exist.
'Evil cannot exist where there is love,' said the Book.
I don't think he'd ever believed that evil could exist in Zephyr.
Evil exists, he might be saying, and sometimes it goes unpunished; we can't say why.
Candide is always questioning how and why such evils exist.
But evil does not exist in order to serve, but to rule.
Evil exists in all of us and we have witnessed it now in thee.