In April 1965, at a Vietnam demonstration in Eugene, Oregon, Diane Newell Meyer, then a senior at the University of Oregon, pinned a handwritten note on her sweater reading "Let's make love, not war", thus marking the beginning of the popularity of this phrase. A picture of Meyer wearing the slogan was printed in the Eugene Register-Guard and then a related article turned up in the New York Times on May 9, 1965. When the slogan was used in California in 1967, then Governor Ronald Reagan joked to protesters "Those guys [the protesters] look like they can't make either of both".
John Lennon claimed to be the inventor of the phrase.
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