to create greater public awareness of the intrinsic value of our wilderness, forests, waters, primitive parks, and monument lands and to seek the preservation of the natural beauty and scenic value... moreto create greater public awareness of the intrinsic value of our wilderness, forests, waters, primitive parks, and monument lands and to seek the preservation of the natural beauty and scenic value of this national heritage; to preserve by the encouragement of protective legislation or otherwise the natural beauty of our great out-of-doors."