To Erna Asbeck
Dear Frau Asbeck, 7 May 1947
Precognitive dreams can be recognized and verified as such only when the precognized event has actually happened.
Otherwise the greatest uncertainty prevails.
Also, such dreams are relatively rare.
It is therefore not worth looking at the dreams for their future significance.
One usually gets it wrong.
C.G. Jung ~Carl Jung, Letters Vol. 1, Page 460-461.