This letter, and a similar letter which he wrote to his students, was never sent. Ehrenfest shot Wassik in the waiting room of the Professor Watering Institute in Amsterdam where Wassik was being treated.
Ang sulat na ito, at katulad ng isang sulat na kung saan wrote siya sa kanyang mga mag-aaral, ay hindi naipadala. Ehrenfest pagbaril Wassik sa tanggapan ng Professor pagtutubig Institute sa Amsterdam kung saan Wassik ay na-turing.