He was a very prominent exponent of the idea that people should go out for their own interest.

他是个非常卓越的倡导者,他提倡人们应该追求自己的利益

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And that's not, that's what's good for myself and that's what benefits others and the environment,

并不是以我自己的利益为主，而是其它利益，像环境的利益等。

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There are lots of incentives, people acting in their own interests--they have to do that.

有很多的动机，促使人们根据自己的利益行事-他们也不得不这样做。

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Why are you killing me for your own benefit?

为什么你为了自己的利益而杀我

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