Peter Matthiessen (May 22, 1927 – April 5, 2014) was an American novelist, naturalist, wilderness writer, zen teacher, and onetime CIA agent. A co-founder of the literary magazine The Paris Review, he is the only writer to have won the National Book Award in both nonfiction (The Snow Leopard, 1979, category Contemporary Thought) and fiction (Shadow Country, 2008). He was also a prominent environmental activist.
