In a letter of May 1960, he wrote that in so far as the psyche is capable of telepathic and precognitive perceptions it exists, at least in part, in a “continuum outside time and space,” hence the possibility authentic postmortal phenomenon.
The comparative rarity of such phenomena suggests at all events that the forms of existence inside and outside time are so sharply divided that crossing this boundary presents the greatest difficulties.
But this does not exclude the possibility that there is an existence outside time which runs parallel with existence inside time.
Yes, we ourselves may simultaneously exist in both worlds, and occasionally we do have intimations of a twofold existence.
But what is outside time is, according to our understanding, outside change.
It possesses relative eternity. ~Aniela Jaffe, Jung’s Last Years, Page 14