Words have a magical power. They can bring either the greatest happiness or deepest despair; can transfer knowledge from teacher to students words enable the orator to sway his audience and dictate its decisions. Words are capable of arousing the strongest emotions and prompting all man's actions. Do not ridicule the use of words in psychotherapy. (Sigmund Freud, German Psychiatrist)

　　言辞具有不可思议的力量。他们能带来最大的幸福，也能带来最深的失望;能把知识从教师传给学生;言辞能使演说者左右他的听众，，并强行代替他们作出决定。言辞能激起最大强烈的情感，促进人的一切行动。不要嘲笑言辞在心理治疗当中的的用途。(德国精神分析学家 弗洛伊德 S)