None of you got smallpox vaccinations, because once a country was certified to be smallpox free, there was no reason to-- there was no reason to vaccinate people any longer.

你们当中没人接种过天花疫苗,因为一旦一个国家确认不再有天花,就没有理由,就没有理由再给人们接种

耶鲁公开课 - 生物医学工程探索课程节选

Earlier the objection was, We had no good reason to think the soul was one of the building blocks from which we're composed; we have no good reason to think it's one of the pieces that was around before our body got put together, before our birth.

早一点的反驳意见是,我们没有好的理由来相信灵魂,是组成我们的一个基础部件,我们没有好的理由去相信它是,在我们出生前,身体形成前就存在的部分之一

耶鲁公开课 - 死亡课程节选