Do I in any way profit from this misery?” Nietzsche finally responded. “I have reflected on that very question for many years. Perhaps I do profit. In two ways. You suggest that the attacks are caused by stress, but sometimes the opposite is true – that the attacks dissipate stress. My work is stressful. It requires me to face the dark side of existence, and the migraine attack, awful as it is, may be a cleansing convulsion that permits me to continue.