I think it was a famous magazine editor. I must be butchering the quote because Google search is absolutely no help on this one. In particular, I really don't remember how the third rule was exactly phrased.

I remember reading about a famous editor at a famous magazine that was known for edgy content. I think it probably existed in the 1980s or earlier. The editor was known for accepting submissions covering a very wide variety of topics, and they had very high standards for quality, and they had these three rules. I wanted to look them up to remind myself of exactly how they went.

  • Welcome to Writing.SE! Unfortunately I have to agree with the close-voters; this isn't really a question about writing. It might be on-topic on Literature.SE, but check their on-topic guidelines first.
    – F1Krazy
    Oct 17 '20 at 16:25

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