Plantiveau, le concierge: Watch out, ma’am. That’s the deep part where you are.
Christina Delassalle: There is no danger. I can swim.
Plantiveau, le concierge: That don’t mean a thing. It’s always the ones who know how that get drowned. The ones who can’t, don’t go near the pool.
– Les Diabolique (1955) directed by Henri-Georges Clouzot