For Bentham, all that matters, you'll remember, are the intensity and the duration of a pleasure or pain.

对边沁来说，要记住，真正重要的，是快乐或痛苦的强度和持续时间。

耶鲁公开课 - 公正课程节选

Being well off is a matter of experiencing pleasure and avoiding or minimizing the experience of pain.

幸福就是体验快乐,避免或将痛苦体验最小化。

耶鲁公开课 - 死亡课程节选