Robert Hackett

“A single overstatement, wherever or however it occurs, diminishes the whole, and a carefree superlative has the power to destroy, for the reader, the object of the writer's enthusiasm.”
― E.B. White, The Elements of Style

“Vigorous writing is concise. A sentence should contain no unnecessary words, a paragraph no unnecessary 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 his sentences short, or that he avoid all detail and treat his subjects only in outline, but that every word tell.”
― William Strunk Jr., The Elements of Style