Kelinda: This business of love...you have devoted much literature to it. Why do you build such a mystique around a simple biological function?
Kirk: We enjoy it.
Kelinda: The literature?
Kirk: Kelinda, I'm sorry I brought up the whole subject.
Kelinda: Do you really regard this touching of the lips as pleasurable?
Kirk: I did.
Kelinda: Curious. Let me try.