It might help to think of the principal as the boss and the agent as an employee.

将委托人视为老板，将代理人视为雇会有所帮助。

Many of the basic power dynamics in society boil down to the relationship between one person—a principal—who needs another—an agent—to do something for him.

在社会中，许多基的权力动力学以归纳为个人——委托人——需个人——代理人——为其做事之间的关系。

That the agent, in this case the borrower has incentives--will have incentives--to do things that are not in the interests of the principal.

代理人，在例中是借款人，会有动机去做些不符合委托人利益的事情。