Dr. Peter Venkman:

"What I'd really like to do is talk to Dana. Dana? It's Peter."

Dana Barrett:

"There is no Dana, there is only Zuul."

Dr. Peter Venkman

"Oh, Zuulie, you nut, now c'mon. Just relax, c'mon. I want to talk to Dana. Dana, Dana. Can I talk to Dana?"

Dana Berrett: [in an inhuman demonic voice]

"There is no Dana, only Zuul!"

Dr. Peter Venkman:

"What a lovely singing voice you must have."