The man closed his eyes and floated into the most comfortable sleep he had ever known.

VOA: special.2010.05.01

From the mere fact that they can't picture it from the inside, it doesn't follow that nobody believes they're ever in dreamless sleep.

仅从他们无法设身处地,想象这种情况这个事实，是无法得出没有人相信,自己能处于无梦睡眠的结论的。

耶鲁公开课 - 死亡课程节选

Well, should we conclude, therefore, so nobody really believes that they're ever in dreamless sleep?

那么我们就应该得出结论，没有人真正相信,他们可以进入无梦的睡眠么？

耶鲁公开课 - 死亡课程节选