text:  Was there some one still living like himself; another human creature struggling for existence in this great world and guarding as he had done in his cavern his treasure of water? Should he have another companion to speak with; another with whom perhaps to get over the evil days; to whom to communicate his secret of producing water from diamonds? For the first time since he left the cavern he spoke aloud--he called--he called in the great silence of the earth but nothing answered him