Vaslav Nijinsky spent the final six weeks before his permanent consignment to an insane asylum as something a madman in the attic. With his family--wife, young daughters and occasionally, mother-in-law--and household staff downstairs, the legendary dancer retreated to his room in a remote Swiss villa to tangle with his burgeoning psychosis. Fearful that his wife would (as she ultimately did) commit him, and highly suspicious of the physician-cum-amateur psychiatrist who daily came by to examine him, Nijinsky perceived the diary as the only safe haven for the rambling thoughts that were overtaking him. Throughout, the anxiety and anguish are palpable, as Nijinsky writes about his disillusionment with his mentor and lover, Ballets Russes director Serge Diaghilev; his alienation from and distrust of his closest family members; and his fear of insanity and its consequential confinement. His writing becomes more obscure as the weeks progress and he examines his relationship to God, writing...