Leonie Swann said this quote

Maple thought optimistically that human beings, on their good days, weren't much dimmer than sheep. Or at least, not much dimmer than dim sheep.

~ Leonie Swann

No, little one, George's ghost won't come back. Human beings don't have souls. No soul, no ghost. Simple.How can you say that? protested Mopple. We don't know whether humans have souls or not.Every lamb knows that your soul is in your sense of smell. And human beings don't have very good noses. Maude herself had an excellent sense of smell, and often thought about the problem of souls and noses.So you'd only see a very small ghost. Nothing to be afraid of.

~ Leonie Swann