That is the message of Claire’s Knee. Love is a serious business, and sex is a serious business. It’s not always possible to control it with “reason” (the message of My Night at Maud’s) or with a casual, “free love” approach to life (the message of Claire’s Knee). The older, harsher, more dogmatic rules were created to deal with the physical and elemental side of romance and sex. Rohmer is saying that, perhaps, we should think twice before setting them aside.
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But Rohmer isn’t going along. He thinks it’s all a crock — the whole milieu, the whole lifestyle, the whole philosophy. It’s life as a porn film. It’s not going to work.
—Robert Garrick, Claire’s Knee, Cinema St. Louis