萨斯顿三原则 1.Never Tell How A Trick Is Done.(除非你不得不告诉别人才告诉别人秘密，否则你绝不说出魔术的秘密。) 2.Never Repeat A Trick For The Same Audience.(从不在同一观众面前重复表演同一魔术。) 3.Never Tell Your Audience What You Are Going To Do Ahead Of Time.(从不告诉或暗示观众你下一步要做什么。)