“A mind that is stretched by a new experience can never go back to its old dimensions.” —Oliver Wendell Holmes (1809–1894), American author and scientist who also was an associate Supreme Court justice from 1902 to 1932 11 —Nessmuk (George Washington Sears, whose writings about his canoe adventures in the Adirondack Mountains encouraged many readers to set off on treks of their own), Woodcraft, 1884 147