Terry Pratchett said this quote

“ Rincewind stared, and knew that there were far worse things than Evil. All the demons in Hell would torture your very soul, but that was precisely because they valued souls very highly; evil would always try to steal the universe, but at least it considered the universe worth stealing. But the gray world behind those empty eyes would trample and destroy without even according its victims the dignity of hatred. It wouldn't even notice them. ”