“Let’s talk about your rhymed verse,” Geisel had proposed. … “Your scansion is pretty good. But again, it’s too complicated. And your line lengths are all over the place. They won’t look good on the page. Try to even them up. Also, you’ve got a few interior rhymes. Let’s leave interior rhymes to Cole Porter and Ogden Nash. And I’ve counted at least 10 convenience rhymes,” by which he meant rhymes that added nothing to the narrative.
Theodor Geisel aka Dr Seuss's first meeting with "Stan and Jan Berenstain, who were pitching a story about a family of affable bears."
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