Quote by J.K. Rowling

“They call it the Dementor’s Kiss,” said Lupin, with a slightly twisted smile. “It’s what dementors do to those they wish to destroy utterly. I suppose there must be some kind of mouth under there, because they clamp their jaws upon the mouth of the victim and — and suck out his soul.” Harry accidentally spat out a bit of butterbeer. “What — they kill — ?” “Oh no,” said Lupin. “Much worse than that. You can exist without your soul, you know, as long as your brain and heart are still working. But you’ll have no sense of self anymore, no memory, no… anything. There’s no chance at all of recovery. You’ll just — exist. As an empty shell. And your soul is gone forever… lost.”

Quote by J.K. Rowling