But it takes one to know one is probably the most familiar way of putting the point.

同类的事物才能互相认知,也许这是说明这个观点最熟悉的方式

耶鲁公开课 - 死亡课程节选

All right. So suppose that I woke up this morning, that is to say, at a certain point I look around my room and I see the familiar sights of my darkened bedroom.

假定我早上醒来,也就是说,我在某个位置上,环顾房间四周,看到了昏暗的卧室里熟悉的场景

耶鲁公开课 - 死亡课程节选