“Ritual to the Sun” from Acts of Light, a work from 1981, takes its title from a phrase by Emily Dickinson, a poet beloved by Graham. Devoid of theatrical trappings, Ritual to the Sun from Acts of Light celebrates the dancer as an exquisite instrument of expression, while making references to earlier works in the Graham canon. Former New York Times dance critic Anna Kisselgoff called the work neo-classical. “Ritual to the Sun,” the final section, is an ode to the Graham classroom technique.