Six universal principles of influence

Influence--Science and Practice by Dr. Robert Cialdini

Because the principles of influence can be so powerful in causing change in others, we have to consider our ethical responsibilities in the process. Fortunately, the way to be ethical in the use of these principles is the same as the way to be profitable in using them:

Always be sure to influence another in a way that ensures that you haven't damaged your ability to influence this person again in the future. In other words, the other person...