New York City principal Jock Soto retires this week after 20 years. “At 40, he can look back to a special place as one of ballet’s most creative personalities. While choreographers are essential to the art, dancers like Mr. Soto – and they are few – also define and redefine choreography with bold individuality and implicit collaboration. Peter Martins and Christopher Wheeldon have used him repeatedly in their new works. Just as significantly, as Mr. Soto has proved in familiar ballets, interpretation can become a creative act.”