Forward into the untrodden! Courage, old man, and hold on to your umbrella!
The choice, as Wells once said, is the Universe-or nothing. . . . The challenge of the great spaces between the worlds is a stupendous one; but if we fail to meet it, the story of our race will be drawing to its close. Humanity will have turned its back upon the still untrodden heights and will be descending again the long slope that stretches, across a thousand million years of time, down to the shores of the primeval sea.
All along the untrodden paths of the future, I can see the footprints of an unseen hand.
We must go beyond textbooks, go out into the bypaths and untrodden depths of the wilderness and travel and explore and tell the world the glories of our journey.
They who set an example make a highway. Others follow the example, because it is easier to travel on a highway than over untrodden grounds.