Two for the Road (1967)

Howard Manchester: Now, I warn you solemnly, Marcus, you're denying Joanna the right to be her own, paradoxical self.
Mark Wallace: Howard, you're the largest pocket of untapped natural gas known to man.

Trivia: Jacqueline Bisett's voice is partially dubbed in this film by someone else. There was so much background noise that her voice just had to be dubbed, and she had left the country to film something else, so wasn't available to record it herself.

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