To Bernard Aschner

Dear Colleague, 28 March 1951

I still have vivid memories of our meeting in Vienna, since it was from you that I took over, in my own way, your interest in Paracelsus.

During the war, especially, I was much concerned with him, in particular with his religio medica as expounded in his treatise De Vita Longa.

As for your question I can only tell you that I fully stand by my earlier remarks.

Sooner or later it will grow into a question of first class importance for humanity, since we are rapidly approaching the time when the feeding of the world’s population will come up against a barrier that cannot be crossed.

Even now India is so near the brink that a single bad season is enough to precipitate a famine, and today, thanks to modern hygiene, the whole world is multiplying unchecked.

This surely cannot go on much longer, for the problem will then arise that already confronts all primitive societies: limitation of progeny through food shortages.

This danger of overpopulation, already staring us in the face, still hasn’t reached the consciousness of the public at large, least of all our legislators, who are smitten by a special blindness.

Your initiative has my undivided applause.

With collegial regards,

Yours sincerely,

C.G. Jung ~Carl Jung, Letters Vol. II, Pages 14-15.