This temptation is so great that I shall overcome my reluctance, and reveal what our Martian communicant secretly confided to Professor FANSEE one memorable night, when both were looking for relaxation from the strain of their protracted labor. On this indeed very rare occasion our Martian philosopher confided to Professor FANSEE some of his own personal earlier experiences. From these it appeared that the Martian--I picture him in my imagination as a tall, lean man with a long white beard--had originally been a fervent follower of the faith of NAZARRO, and that afterwards he had been converted to Darvinianoism. And so profoundly had the Darviniano conclusions obtained a hold on his mentality, that he finally refused to look upon the Heebron and Nazarrano manuscripts as in any way authoritative in regard to what did and what did not constitute morality. With my deeper understanding of Nature, he then had said to himself, let me go back to her, and Nature herself shall teach me the laws of proper conduct. But when he had commenced conscientiously to observe the methods of Nature with this purpose in view, he soon discovered that the conduct of Nature as a whole greatly differs from the conduct deemed just and proper by the Martians. He found that Nature may at any time produce an upheaval of the soil, by which libraries, printing-presses, art museums, temples, churches, factories, institutes of industry and learning, would in a few hours be wantonly destroyed, without the slightest discrimination between the criminal and the virtuous, between things evil and things beneficial to the Martians. In this then, he mused, we cannot follow Nature. Then, seeking for better guidance, he had bethought himself of the law of the survival of the fittest. This law, he reflected, we may be able consciously to apply to our conduct. But how? It is evident that this law refers essentially to physical impediments and obstructions, to physical conditions only. An icy blast may sweep the top of a high hill and wipe out the tribe that inhabits it, and those living in the valley may survive. Yet, had those in the valley been at the pinnacle, they would have perished, and had those at the pinnacle lived in the valley, they would in turn have survived. And if one were to ask what would have happened had the blast struck both tribes at the same time, we answer, those physically the fittest would have survived, absolutely independent of their virtues or vices or of the degree of their intelligence.