Thus I considered moving and eventually did move from theoretical science to practical surgery and gynecology.

I married and became a practicing physician. My wife was soon devoting all her energy and irrepressible vitality to making things easier for me. I opened a private clinic on a lovely quiet street in the city. Medical colleagues who had previously sought my advice as a pathologist sent me patients, and everything seemed to be going well. Illnesses interested me, the ill did not. This is the case and is necessarily the case with ninety percent of all surgeons. Of my own free will I had promised my wife (she was softhearted, much too much so) that I would end my experiments with animals and never again set foot in a casino. I led a well-ordered life.

What was it at bottom that I wished to do “of my own free will”? To become a human being, as millions are. Then came the war. I was inducted, but was not deployed as a field surgeon. Instead I was granted the special favor, so it was thought, of being assigned to a bacteriological laboratory. A mobile task force, sent to trouble spots when needed. It was a time not only of senseless waste of life–millions dead–but also of terrible epidemics. All manner of bacteria were being unleashed, and these were necessarily more dangerous when people were starving, careworn, weakened, and half dead from loss of blood than they would have been in peacetime. Under the wretched hygienic conditions prevailing among the people of Europe in the final years of the war, Spanish grippe took forms that recalled the plagues of the Middle Ages. People dropped like flies.

I was not lazy. I worked day and night. I did my utmost. I had superiors and subordinates. I had regulations to follow and orders to carry out. Serum supply, epidemic control, practical research. It made a difference. I expressed no views about the whys and wherefores of the war and the strategic operations. Nor was anything said to me about them.

My wife wrote to me every day. I wrote back when I could. I was surrounded by people, but did not speak of personal matters for weeks on end. I was respected. I won no friends, but I did win commendations and decorations. After my crime many years later, I was sentenced not to the guillotine but only to exile, and I have these tokens of appreciation for my patriotic effort to thank for that. For the person who had had a hand in epidemic control during that critical period had rendered outstanding service to his country.

But about what that time destroyed in me–I will say nothing. How it brought to fruition what my father had begun–I will not describe it.