My fave:
> An average writer makes the reader think the author is smart. A good writer makes the reader think the reader is smart.
I am quite surprised to see no mention of the importance of an editor. I have to assume that they are no longer as important, these days, as they once were.
My mother was a scientific editor, and she was brutal. I once wrote a 400-page book (that was never published). She edited it for me, and it may be the most perfect prose I’ve ever produced (but it was out of date and technically irrelevant, by the time it was ready).