From Jung's "Memories, Dreams, Reflections"

After the illness a fruitful period of work began for me. A good many of my principal works were written only then. The insight I had had, or the vision of the end of all things, gave me the courage to undertake new formulations. I no longer attempted to put across my own opinion, but surrendered myself to the current of my thoughts. Thus one problem after the other revealed itself to me and took shape.