He says, "I dispute the pretensions of any theory which sets up an imaginary standard of justice not grounded on utility."

他说，我反对任何理论,不以功利为基础，虚构公正标准“

耶鲁公开课 - 公正课程节选

He makes it clear that utility is the only standard of morality, in his view, so he's not challenging Bentham's premise. He's affirming it.

明确指出功利是道德的唯一标准，在他看来，他并没有质疑边沁的前提，而是肯定此观点。

耶鲁公开课 - 公正课程节选