“Omit needless words.”

“This rule is difficult to apply; it is frequently hard to decide whether a single word, such as however, or a brief phrase, is or is not parenthetic. If the interruption to the flow of the sentence is but slight, the writer may safely omit the commas. But whether the interruption be slight or considerable, he must never omit one comma and leave the other. Such punctuation as”

“Vigorous writing is concise. A sentence should contain no unnecessary words, a paragraph no unnecessay sentences, for the same reason that a drawing should have no unnecessary lines and a machine no unnecessary parts. This requires not that the writer make all sentences short or avoid all detail and treat subjects only in outline, but that every word tell.”

“1. Make the paragraph the unit of composition: one paragraph to each topic.”

“It's worse to irresolute than wrong.”

“Vigorous writing is concise.”

“Consciously or unconsciously, the reader is dissatisfied with being told only what is not; the reader wishes to be told what is... If your every sentence admits a doubt, your writing will lack authority.”