In December 1917, Vaslav Nijinsky, a famous male dancer in the Western world, moved into a Swiss villa with his wife and three-year-old daughter and began to go mad. This diary, which he kept in four note books over six weeks, is a sustained, on the spot written account by a major artist of the experience of entering psychosis. A prodigy from his youth in Russia, Nijinsky came to international fame as a principal dancer in Serge Diaghilev's Ballets Russes. After a falling out between the two great men who had lived openly as lovers for some time, Nijinsky struggled to build a career on his own. When psychosis struck, he began to imagine himself as married to God, indeed as God, signing his entries God Nijinsky. Although he lived another 30 years, he never regained his sanity.