My dear Mrs. Mellon, 19 June 1940
Thank you for your friendly letter, which arrived today.
I send you these few words in haste, because this evening at 7 o’clock the last mail for U.S.A. will leave Switzerland.
From now on all communications will be interrupted.
I think the night has descended upon Europe.
Heaven knows if and when and under which conditions we shall meet again.
There is only one certainty-nothing can put out the light within.
Every good wish to you and to your husband!
C.G. Jun g ~Carl Jung, Letters Vol. I, Pages 283-284