Big Bang Theory Quote
Sheldon: Do you want to hear an interesting thing about stairs?
Leonard: Not really.
Sheldon: (going on anyway) If the height of a single step is off by as little as two millimeters, most people will trip.
Leonard: I don't care.
(thinks about it)
Leonard: Two milli - that doesn't seem right.
Sheldon: It's true - I did a series of experiments when I was twelve. My father broke his clavicle.
Leonard: Is that why they sent you to boarding school?
Sheldon: No - that was the result of my work with lasers.
Quote from S01E01 - Pilot