A ballet dancer goes onstage on a given night, in a specific theatre, in a specific ballet and executes, in a specific fraction of musical time a movement that is already past just as it appears. And it takes far more than 10,000 hours of practice and repetition to0 make this movement exquisite, worthy. A dancer's entire career consists of these moments of non-existence; they are not even fleeting, they are, somehow, never there at all, a shadow in someone else's mind at best. -  TONI BENTLEY