To Pascual Jordan

Dear Professor Jordan, 1 April 1948

I received your interesting book Verdriingung und Komplementaritiita little while ago.

Unfortunately a thorough study of it has not yet been possible, but. I hope to get down to it soon.

Although parapsychological problems lie on the extreme edge of my field of research, I still follow with great attention the new developments which one frequently encounters in psychology in regard to these phenomena.

Some time ago I took the liberty of sending you what I have written recently on this subject.

I hope my essay has reached you in the meantime.

Here we are discussing with Pauli the unexpected relations between psychology and physics.

Psychology as might be expected appears in the realm of physics in the field of theory-building.

The outstanding question is a psychological critique of the space-time concept.

On this point I have just made a strange discovery which I would first like to check out with Pauli from the physical side.

If I should publish anything about it in the near future I will not fail to let you know.

Again best thanks for your book,

Yours sincerely,

C.G. Jung ~Carl Jung, Letters Vol. 1, Page 494.