So in those circumstances, I'm an advocate of active euthanasia. I think it is just as if you have a dog who was dying from some disease, you wouldn't say, well we just let nature take its call.

所以这种情况下，我通常会,支持安乐死，我认为,这就像是你的狗得了病,马上就要死了，你不会说，嗯，我们顺其自然吧。

普林斯顿公开课 - 人性课程节选

So I have advocated active use of euthanasia in both circumstances.

我也曾呼吁过使用安乐死,无论是对人还是对动物。

普林斯顿公开课 - 人性课程节选