Peter was an editorial board member of Orion from 1990-2006. He contributed many articles and reviews, as well as two columns: Placemarks and RealEcology. Peter was a remarkably imaginative thinker on matters of culture and nature, and challenged readers and colleagues to rethink and expand the goals of the environmental movement. He maintained that all of his careers—oyster biologist in Florida, army cook at Fort Dix, school teacher in Vermont, organizer of community controlled day care centers in New York City, and director of a public garden in the Bronx—were one seamless exploration of relations between culture and nature. We learned greatly from him and will miss him a lot.