October 6, 1953 Dear Dr. Velikovsky, Thank you very much for your great kindness! — I am not lacking in will power, but I know myself better than you do and I know that in my present condition and situation to accept your invitation would have the most disastrous consequences. Please, keep it open until I can come! (I still hope that after your books are out and my present work is finished I shall be able again to work for you in some fashion.) Affectionately yours, Walter Federn Best regards to your wife!