Plain language sounds purely objective. On the one hand, it has not the accent of mere vituperation, it is thoroughly dignified; and on the other, it is not the language of a person who is mainly concerned with wangling somebody into believing something. When Mr. Jefferson wrote that one of his associates in Washington's cabinet was "a fool and a blabber," his words, taken in their context, make exactly the same impression of calm, disinterested and objective appraisal as if he had remarked that the man had black hair and brown eyes.

Free Speech and Plain Language (1936)