Between them, they came up with the ethical theory known as utilitarianism.

因为这二者设想建立了叫做实用主义的一种道德理论。

What Aristotle's ethical theory is all about is this: he's trying to show you how to be happy—what true happiness is.

他尝试给你解释如何幸福——什么是真正的幸福。

Understanding ethical theories is how we increase our chances of success at simply being human beings who have to negotiate with other human beings.

了解伦理理论让我们可以更有机会成功地扮演必须要和其他人类协商的人类。

(Laughter) Understanding ethical theories is how we increase our chances of success at simply being human beings who have to negotiate with other human beings.

（笑声） 理解伦理理论是我们如何增加我们成功的机会 仅仅作为一个必须与其他人谈判的人。