Ballet has all other artforms beat hands down, writes Charlotte Higgins. “There is no other art form that is so highly evolved, sophisticated, sublime, where absolute discipline of technique is allied with grace, beauty, sensuality and pure emotion. Ballet – ballet is another world. Ballet is about limbs and bones and muscle, about flesh and skin. It is visceral. Ballet is about what it means to be human while the blood pumps through our veins; about the things that are too strange, dense and delicate to be strangulated by human speech or song.”