I need no great effort of memory to recall, in every detail, the rainy autumn evening when I stood with my father in one of the more frequented streets of Moscow, and felt that I was gradually being overcome by a strange illness. I had no pain at all, but my legs were giving way under me, the words stuck in my throat, my head slipped weakly on one side... It seemed as though, in a moment, I must fall down and lose consciousness.