He laughed when he did so. I was to learn that green Martians only laugh at the pain or suffering of others.

VOA: special.2010.07.17

Suppose we conjecture that the only thing intrinsically valuable is pleasure and the only thing intrinsically bad is pain.

假设我们推测出唯一,拥有固有价值的东西是快乐,唯一一样自身是坏的东西是痛苦。

耶鲁公开课 - 死亡课程节选

It's a very tempting view to think, what makes life worth having and the only thing worth having for its own sake, is having pleasure and avoiding pain.

它也是一种很有诱惑力的观点，什么让生命值得拥有，而唯一,因其自身品质值得拥有的东西，就是享受快乐，避免痛苦。

耶鲁公开课 - 死亡课程节选

But as he reached the top, he said the pain went away and he only felt happiness.

VOA: special.2010.06.30

suppose we make for, the moment, the bold conjecture, the philosophical claim, that not only is pleasure and the absence of pain, not only is pleasure one good thing and pain one bad thing.

假设此刻我们做出大胆猜测，哲学声称，不仅只,快乐和没有痛苦，快乐不止是一样好的东西，痛苦不止是一样坏的东西。

耶鲁公开课 - 死亡课程节选

Doctors usually prescribe opiate drugs only for patients with severe pain.

VOA: special.2010.05.04

Most people suffer only muscle pain because of heat stress.

VOA: special.2010.07.27

And,their pain could be eased only by injection.

VOA: special.2010.05.04