Is the soul invisible in the way that the forms are, being indestructable, or is it invisible in the way that radio waves are, destructible.

灵魂的无形,是和形式的无形一样不可毁灭，还是和无线电波的无形一样,是可以毁灭的。

耶鲁公开课 - 死亡课程节选