Joseph Francis MacGrail, Selling Things
“ You know how quickly a joke, something funny, is expressed in the facial muscles; how quickly they respond to any mental state-disappointment, bad news, discouragement, sorrow, anger. The muscles of the face, its varying expressions, change with the thought. In other words, the facial expression indicates the condition of a man’s mind. By this you can tell whether your prospect is in a good or a bad humor, whether he is a human icicle, cold, unfeeling, or a human magnet, tender, kind, sympathetic. ”
