34. Obey these rules before you obey grammarians, who say things like "Don't split infinitives" or "Don't begin sentences with And or But" and "Don't end a sentence with a preposition."
Real grammarians, i.e. linguists who study the grammar of English as it is, teach us that these aren't actually rules of grammar anyway, so much as prescriptions that were made up out of whole cloth for various reasons and that never had much to do with the way English was spoken or written. Here, for example, is an index of postings on Language Log (a group blog run by several professional linguists) about the split-infinitive issue. (The well-known story of this silly prescription was that it was decided in the 18th century that, since you can't split infinitives in Latin [Latin infinitives are a single word], you shouldn't split them in English either.)
Relatedly, the passive in English has a bad reputation that is not very well deserved. See here for a full explanation by the author of the Cambridge Grammar of the English Language.
You'd think this was just so much nitpicking -- and to some extent it is -- but understanding these issues fully can help you make better rhetorical use of English. This is particularly true of the passive -- the article I linked above explains how passive and active versions of the same clause help us place emphasis in a sentence exactly where it will do us the most good. (As such, I think the strongest version of your point 13 that I could endorse would be "Understand clearly the difference between active and passive, and choose between them advisedly.")
One more point which I raise not least because it's a stunningly entertaining read: the same author's (Geoff Pullum's) "The Land of the Free and The Elements of Style" (PDF), an utter demolition of the grammar advice given in Strunk and White's book. This is NOT to say that S&W's stylistic advice should be thrown out as well, but Pullum certainly establishes that (a) they have absolutely no idea what they're talking about when grammar is concerned, and that (b) they follow almost none of their own grammatical or stylistic prescriptions, so the whole thing should be taken with a grain of salt. Read Pullum's article if you enjoy a well-deserved poison pen book review and would like to learn a few things about English grammar in the process.
I hesitate to counter your nitpicking with more nitpicking, but I do agree that "understanding these issues fully can help you make better rhetorical use of English". And so, I'd like to correct some of what you write about the split infinitive. The story is somewhat more subtle and interesting.
The well-known story of this silly prescription was that it was decided in the 18th century that, since you can't split infinitives in Latin [Latin infinitives are a single word], you shouldn't split them in English either.
This well-known story is actually...
The topics of rationality and existential risk reduction need their own Richard Dawkins. Their own Darwin. Their own Voltaire.
Rhetoric moves minds.
Students and masochists aside, people read only what is exciting. So: Want to make an impact? Be exciting. You must be heard before you can turn heads in the right direction.
Thus, I've decided to try harder and actually put effort into the quality of my writing instead of just cranking stuff out quickly so I can fill in inferential gaps and get to the cutting edge of the research subjects I care about.
That's why I asked LWers for their picks of best nonfiction writing on Less Wrong.
It's also why I've been reading lots of good science writing, focusing on those who manage to be exciting while covering fairly complex subjects: Dawkins, Sagan, Gleick, Zimmer, Shermer, Ramachandran, Roach, Sacks, Hawking, Greene, Hofstadter, Penrose, Wilson, Feynman, Kaku, Gould, Bryson, Pinker, Kurzban, and others.
I've also been re-reading lots of books and articles on how to write well: Keys to Great Writing, Style: Lessons in Clarity and Grace, Elements of Style, On Writing Well, The Classic Guide to Better Writing, The Book on Writing, Telling True Stories, Writing Tools, Ideas into Words, The Chicago Guide to Communicating Science, A Field Guide for Science Writers, Six Rules for Rewriting, Writing, Briefly, and Singularity Writing Advice. (Conversations with Eliezer also helped.)
I don't know if I can become the Voltaire of rationality and existential risk reduction, but it seems worth a shot. Every improvement in writing style is beneficial even if my starry goal is never met. Also, it appears I produce better writing without really trying than most people produce with trying. (If you've ever had to grade essays by honors English seniors, you'll know what I mean.) I expect to gain more by striving where I already excel than by pushing where I have little natural talent.
(I won't try to write everything well. Sometimes I should just crank things out. To be honest, I didn't spend much time optimizing this post.)
My other hope is that a few other writers decide they would like to be the Voltaire of rationality and/or existential risk reduction. May this post be useful to them. It's a list of recommendations on writing style pulled from many sources, in no particular order.
And, just one piece of process advice. Do not apply any of these rules while drafting. Instead, write down whatever horrible shit comes out of you and do it quickly. Then revise, revise, revise.
Now: What are your favorite pieces of writing advice?