Vaslav Nijinsky spent the last years of his life in a Zurich asylum. After returning from an American tour in 1917, he retreated to Switzerland, where his wife began to notice disturbing changes in his behavior. He grew impulsive, took long walks alone, and wrote obsessively in a diary: I am feeling through the flesh and not through the intellect. I am the flesh. I am the feeling. I am God in flesh and feeling. I am man and not God. I am simple. I need not think. I must make myself felt and understood through feeling. Scientists think about...