Now Playing: ‘Mary Oliver: Saved By The Beauty Of The World,’ Sasha Waters Documentary On Poet Beloved By Oprah, Stephen Colbert & More

The words “poet” and “bestselling” do not often go together. But they apply in the case of Mary Oliver, the Pulitzer Prize winner who gained a legion of fans – including the famous, from the likes of Oprah and Stephen Colbert to Helena Bonham Carter, Steve Buscemi, and Maria Shriver.