" I know you don't like to admit it, Happy, but it's all science, all of the time. Ghosts, demons, the afterworlds- all of existence and everything beyond- it's all science. We don't always understand it yet, that's all. Now hush like a good bunny and let me get on with my work, or I'll start throwing words like -quantum- around, and you know how you hate that. "

― Simon R. Green , Ghost of a Smile (Ghost Finders, #2)