Mama (I) (2013)
Dr. Dreyfuss' Secretary: A ghost is an emotion bent out of shape, condemned to repeat itself time and time again.
Dr. Dreyfuss' Secretary: Extraordinary claims require extraordinary proof.
Ron: [Finding the girls] Burnsie! Can we call them now!
Victoria: Daddy, look! there's a woman outside the window. And she's not touching the floor.
Dr. Dreyfuss: There is no rational explanation that supports this theory. But it is only the ability to embrace the different reality, that makes science expand beyond the limits of what we know. However, extraordinary claims require extraordinary proofs.