If I were to choose the sights, the sounds, the fragrances I most would want to see and hear and smell--among all the delights of the open world--on a final day on earth, I think I would choose these: the clear, ethereal song of a white-throated sparrow singing at dawn; the smell of pine trees in the heat of the noon; the lonely calling of Canada geese; the sight of a dragon-fly glinting in the sunshine; the voice of a hermit thrush far in a darkening woods at evening; and--most spiritual and moving of sights--the white cathedral of a cumulus cloud floating serenely in the blue of the sky.