One who moralizes; one who teaches or animadverts upon the duties of life; a writer of essays intended to correct vice and inculcate moral duties.
One who practices moral duties; a person who lives in conformity with moral rules; one of correct deportment and dealings with his fellow-creatures; -- sometimes used in contradistinction to one whose life is controlled by religious motives.
Ages when custom is unsettled are necessarily ages of prophecy. The moralist cannot teach what is revealed; he must reveal what can be taught. He has to seek insight rather than to preach. Walter Lippmann