Two minutes from the past.

Outside of Gloucester, 1784.

Dr. Claveaux: Time does not exist.
Charles: Time doesn't exist? But you have a time machine.
Dr. Claveaux: Things do not move through time, they exist in places, in time. Take that house for instance. If that same house were at the other end of the lane, and I were to burn this one down; what happens to the other house?
Charles: Ah, nothing.
Dr. Claveaux: Exactly.
Charles: Wait, what if you kill your grampa?
Dr. Claveaux: Then my grandfather would be dead, here.
Charles: And in our time?
Dr. Claveaux: He still will not be dead, there.
Charles: I don't get it.
Dr. Claveaux: Yes, well it is a lot of math.