Peter Matthiessen, American novelist, naturalist, and wilderness writer, died at age 86 on April, 5, 2014 in his home in Sagaponack, N.Y.. He was born in New York City in 1927 and graduated from Yale University in 1950, already a published writer. The following year, he helped to found The Paris Review. His passion for adventure, the natural world, truth, and environmental activism imbued his writing with credibility and an unique kind of spiritual authenticity. He won a National Book Award in fiction and nonfiction for Shadow County and The Snow Leopard. He was elected to the American Academy of Arts and Letters in 1974. He will be missed, yet his work will be appreciated for a long time. Matthiessen’s final novel, In Paradise, was published on April 8, by Riverhead Books. Listen to Matthiessen on NPR.