William Safire said this quote

“ Do not put statements in the negative form.And don't start sentences with a conjunction.If you reread your work, you will find on rereading that agreat deal of repetition can be avoided by rereading and editing.Never use a long word when a diminutive one will do.Unqualified superlatives are the worst of all.De-accession euphemisms.If any word is improper at the end of a sentence, a linking verb is.Avoid trendy locutions that sound flaky.Last, but not least, avoid cliches like the plague. ”