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. Let a man have thought what he will of Nature in the, house, she will still be novel outdoors . . .

  My thought is a part of the meaning of the world, and hence I use a part of the world as a symbol to express my thought.