Richard Adams said this quote

No, no- the sky will grow dark, cold rain will fall and all trace of the right way will be blotted out. You will be all alone. And still you will have to go on. There will be ghosts in the dark and voices in the air, disgusting prophecies coming true I wouldn’t wonder and absent faces present on every side, as the man said. And still you will have to go on. The last bridge will fall behind you and the last lights will go out, followed by the sun, the moon and the stars; and still you will have to go on. You will come to regions more desolate and wretched than you ever dreamed could exist, places of sorrow created entirely by that mean superstition which you yourself have put about for so long. But still you will have to go on