"[I] must be out-of-doors enough to get experience of wholesome reality, as a ballast to thought and sentiment.  Health requires this relaxation, this aimless life.  This life in the present . . . I keep out of doors for the sake of the mineral, vegetable, and animal in me."

Henry David Thoreau

Photo: Long's Peak and an aspen tree on Bierstadt Moraine; Rocky Mountain National Park, CO; September 30, 2012