If you do have it, the disease will always have onset by age 40, 50 or what have you.

如果你有的话，这个病就会从40岁，50岁之类的年纪0,开始发作。

耶鲁公开课 - 死亡课程节选

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

And they did this by taking-- they recognized that somehow, if you had a mild exposure to the disease, your body could then develop protection against more severe forms of the disease.

他们通过用,他们通过某种方式意识到,如果较轻微地得过这种病,你的身体会发展保护机制,来抵挡更为严重的疾病

耶鲁公开课 - 生物医学工程探索课程节选