Millions of men have lived to fight, build palaces and boundaries, shape destinies and societies; but the compelling force of all times has been the force of originality and creation profoundly affecting the roots of human spirit.
Wilderness is not a luxury but a necessity of the human spirit. Edward Abbey
Difficulties are meant to rouse, not discourage. The human spirit is to grow strong by conflict. William Ellery Channing
No pessimist ever discovered the secret of the stars or sailed an uncharted land, or opened a new doorway for the human spirit. Helen Keller