Bentham arrives at this principle by the following line of reasoning: We're all governed by pain and pleasure, they are our sovereign masters, and so any moral system has to take account of them.

边沁是这样论证这一原则的：,我们都受到痛苦和快乐的支配，苦乐是我们至高无上的主宰，因此任何道德体系都应考虑到它们。

耶鲁公开课 - 公正课程节选