From Conversations with C. G. Jung

It seems to me that we are at the end of an era.

The splitting of the atom and the nuclear bomb bring us a new view of matter.

As physical man cannot develop any further, it would seem that this particular evolution ends with man.

Like the caterpillar dissolves and turns into a butterfly, it is conceivable that the physical body of man could change into a more subtle body.

It might not be necessary for him to die to be clothed afresh and be transformed. Carl Jung, Jung-Ostrowski, Page 63.