(STOCKBRIDGE, Mass.) – “Thoreau or, Return to Walden,” a world premiere written and performed by David Adkins, is now running at the Berkshire Theatre Group’s Unicorn Theatre through Saturday, July 11, 2015, at 8pm. In this one-man show, Adkins takes the stage as New England Transcendentalist, poet, and philosopher Henry David Thoreau. The writing of…