If there is anything in the discussion to follow that may seem irreverent to the reader, the author wishes to call attention that he has but presented well substantiated facts. It is not only his opinion that he is voicing, but it is the facts as he has found them recorded in the researches of numerous sincere men. Finally, it is the conviction of all freethinkers that, as Professor James H. Leuba has stated, "It is, furthermore, essential to intellectual and moral advances that the beliefs that come into existence should have free play. Antagonistic beliefs must have the chance of proving their worth in open contest. It is this way scientific theories are tested, and in this way also, religious and ethical conceptions should be tried. But a fair struggle cannot take place when people are dissuaded from seeking knowledge, or when knowledge is hidden." The cultivation of the intellect is a duty that is imposed on all men. Even those who still cling to the dying beliefs must admit the force of what Winwood Reade said, "To cultivate the intellect is therefore a religious duty; and when this truth is fairly recognized by men, the religion which teaches that the intellect should be distrusted and that it should be subservient to faith, will inevitably fall." When the principles of freethought shall have dispelled the intellectual cloud of the God-idea and the vanishing dream of a heaven which has too long drawn men's eyes away from this earth, then, and then only, will these words of Cicero have widespread meaning: "Men were born for the sake of men, that each should assist the others." THE NECESSITY OF ATHEISM CHAPTER I THE EVOLUTION OF RELIGIOUS BELIEFS _To early man, the gods were real in the same sense that the mountains, forests, or waterfalls which were thought to be their homes were real. For a long time the spirits that lived in drugs or wines and made them potent were believed to be of the same order of fact as the potency itself. But the human creature is curious and curiosity is bold. Hence, the discovery that a reported god may be a myth._ MAX CARL OTTO. The geologists estimate that the age of the earth is somewhere between 80 and 800 millions of years; that the Neanderthal race existed for more than 200,000 years; that between 40,000 and 25,000 years ago, as the Fourth Glacial Period softened towards more temperate conditions, a different human type came upon the scene and exterminated Homo Neanderthalensis. These first "true men" descended from some more ape-like progenitors and are classed by ethnologists with the same species as ourselves, and with all human races subsequent to them under one common, specific term, Homo Sapiens.