"People argue against the existence of spirits and immaterial souls because they can't be explained by science. But if by definition these things are outside the scope of science, then you can't use science to prove or disprove them."

"Do these spirits and souls actually affect anything in the real world?"

"Sure."

"Then they're within the scope of science."

"Okay, let's say they don't interact at all with the world."

"Then why do we care?!?!"

--Calamities of Nature