Vaslav Nijinsky was one of the great dancers of the early twentieth century, and a revolutionary choreographer of the modernist era. But at the height of his powers, he was diagnosed as schizophrenic and spent much of the rest of his life in institutions. "Letter to a Man" is a one-man show based on Nijinsky's diaries, performed by Mikhail Baryshnikov – one of the greatest dancers of our own time – at the Brooklyn Academy of Music. Baryshnikov talks with David Remnick about dancing, acting, and the effects of age on his body. He also shares the story of a very awkward and very funny dinner he once had with Donald Trump. But Trump, he feels, is no joke: the presidential candidate reminds Baryshnikov of the authoritarian leaders of the Soviet Union. Russians, he says, are "fascinated with people they're afraid of."