MULDER: You know, I never stop to think... that the light is billions of years old by the time we see it. From the beginning of time right past us into the future. Nothing is ancient in the universe. But, maybe they are souls, Scully. Traveling through time as starlight,looking for homes. I wonder what my mother saw. And I wonder what she was trying to tell me.
SCULLY: Go get some sleep.
MULDER: All right.