Hoy leí por ahí... algunas verdades

Hoy leí por ahí... algunas verdades (de una larga lista seleccioné las siguientes)

-The badness of a movie is directly proportional to the number of helicopters in it.
-There is a very fine line between “hobby” and “mental illness.”
-A person who is nice to you, but rude to the waiter/janitor, is not a nice person.